Questions Asked on
October 18, 2010

  1. physics

    a golf ball is struck at a 45 degree angle and flies off at 28m/s. what is the range? using the SOH CAH TOH method and the range formula.

    asked by Natalie
  2. physics

    a cannon fires at a castle. the walls are 9m high. if the cannon is pointed at an angle of 60 degrees and has a muzzle velocity of 35m/s will the cannon balls go over the wall or hit the wall?

    asked by Natalie
  3. algebra/materials engineering

    what phases are present in a slow cooled 1090 stell and how much of each of these phases are present? so the phases are cementite and pearlite and it's hypereutectoid. The formula is hypereutectoid=cementite(6.67%)+pearlite(0.8%) I know in a 1090 steel,

    asked by Anonymous
  4. Algebra 1- PLEASE help

    Roberta sold fifty tickets for the school play. Roberta sold ten more student tickets than adult tickets. How many student tickets did Roberta sell? From this result, if the total cost of a student ticket was three-fourths the cost of an adult ticket, and

    asked by 123ABC
  5. Spanish

    Are these both the same: se quitan and quitarse

    asked by Amy
  6. chemistry

    A sample of gas weighing 9.0 (g) at a pressure of 1 atm occupies a volume of 12.3 L. If the pressure is doubled,what is the resulting volume? (Assume constant temperature)

    asked by Dakota
  7. statistics

    Can a hypothesis test yield a statistically significant (say p

    asked by Anonymous
  8. comp 150

    English, should be the official language of the united states

    asked by Anonymous
  9. 12th grade

    the constitution and the changes

    asked by Anonymous
  10. Physics

    An object with a mass of 3.09x10^0 kg is subjected to a force of 8.8505x10^2 N directed at an angle of 1.6968x10^2 degrees from the x axis. A second force of 2.98725x10^3 N acting in the negative Y directions is also applied to the object. To two

    asked by peter
  11. accounting

    Eddings Company had a beginning inventory of 400 units of Product XNA at a cost of $8.00 per unit. During the year, purchases were: Feb. 20 600 units at $9 Aug. 12 300 units at $11 May 5 500 units at $10 Dec. 8 200 units at $12 Eddings Company uses a

    asked by vivian
  12. chemistry

    if 40kj of energy is absorbed by 500g od water in 10c temprature. what is the fainal temprature of the water?

    asked by suhail
  13. Evolution

    In natural populations of the intertidal copepod Finistra elegans, variation exists for two color morphs: a light brown form and a light green form. A student estimates the frequency of the light brown copepod to be 12%, 15%, and 17% over three consecutive

    asked by Kimberry
  14. math

    Eddings Company had a beginning inventory of 400 units of Product XNA at a cost of $8.00 per unit. During the year, purchases were: Feb. 20 600 units at $9 May 5 500 units at $10 Aug. 12 300 units at $11 Dec. 8 200 units at $12 Eddings Company uses a

    asked by vivian
  15. Science

    How much would 1kg weigh on the Moon if the pull of gravity there is about one-sixth of the pull of gravity on earth?

    asked by Babiibun
  16. chemistry

    Based on the mass of O2 produced can you calculate the gram molecular weight? Chem lab on oxygen production 10g KClO3 reacts with heat to produce 2KCl(s)+3O2.What is the mass produced? 10g/122.6=0.0816 mole of KClO3 0.00816x3moleO2/2moleKClO3=0.1224 moleO2

    asked by michelle
  17. math

    I’ve skipped to much school, well not necessarily skipped but have been sick. I had strep throat for 2 weeks. Now i get this project mailed to me, sleep all day, and didn't do it. I just need one more strategy that explains this: How to get the answer to

    asked by ral
  18. Algebra II

    Complete the box to illustrate the product (x+8)(x+7) __x__________8____ | | | ? | 7x | ? | | | | |__________| ______| | | | | | | x | x^2 | ? | | | | |_________|________| Help me please! I do not know where to even begin.

    asked by Daniel
  19. science

    the acceleration due to gravity of mars is 3.7 m/s2. An astronautto throw a tennis ball 70 m upward on mars. How high will he able to throw it on the earth?

    asked by sam
  20. physics

    The acceleration due to gravity of mars is 3.7 m/s2. An astronautto throw a tennis ball 70 m upward on mars. How high will he able to throw it on the earth?

    asked by sam
  21. Math Algebra

    kassie an kesya are dividing $39 into two parts in order that the sum of 2/3 of one part and 3/4 of the other part is $28. What are the parts?

    asked by bob
  22. marketing

    explain the term life cycle

    asked by pretty
  23. 9th gradesocial studies

    i have a project on changing area under forest and its impact on environment and i am not getting any information on it can you help me

    asked by Anonymous
  24. Physics - net force on charges

    Three charged particles are located at the vertices of a right angled triangle. Charge A(5.0*10^-6) has Cartesian coordinates of (0,4); Charge B(-5.0*10^-6) is at the origin; Charge C(4.0*10^-6) has coordinates (5,0),where the coordinates are in meters.

    asked by Anonymous
  25. Physics - Charge on pith balls

    Two pith balls equally charged and each with a mass of 1.5. White one ball is suspended by a thread, the other is brought close to it and a state of equilibrium is reached. In that situation, the two balls are separated by 2.6cm and the thread attached to

    asked by Anonymous
  26. Physics - charge on sphere

    Two 2.0g spheres are attached to each end of a silk thread 1.20m long. The spheres are given identical charges and the midpoint of the thread is then suspended from a point on the ceiling. The spheres come to rest in equilibrium, with their centers 15cm

    asked by Anonymous
  27. physics

    A hunter wishes to cross a river that is 1.1 km wide and flows with a speed of 5.0 km/h parallel to its banks. The hunter uses a small powerboat that moves at a maximum speed of 9 km/h with respect to the water. What is the minimum time necessary for

    asked by john
  28. physics

    A hunter wishes to cross a river that is 1.1 km wide and flows with a speed of 5.0 km/h parallel to its banks. The hunter uses a small powerboat that moves at a maximum speed of 9 km/h with respect to the water. What is the minimum time necessary for

    asked by john
  29. physics

    A hunter wishes to cross a river that is 1.1 km wide and flows with a speed of 5.0 km/h parallel to its banks. The hunter uses a small powerboat that moves at a maximum speed of 9 km/h with respect to the water. What is the minimum time necessary for

    asked by john
  30. Physics

    Both start from rest, but experienced Stan leaves the starting line 1.00 s before Kathy. Assume Stan moves with a constant acceleration of 3.45 m/s2 and Kathy maintains an acceleration of 5.10 m/s2. (a) Find the time it takes Kathy to overtake Stan. (b)

    asked by john
  31. chem

    a balloon at constant temperature is subjected to pressure drop. The resulting volume will be ________ A. Greater than B. Less than C. Equal to the Original Volume of the balloon I put B. Less than but i am not sure

    asked by Michael
  32. Maths Calculus Derivative Integral - Urgent Please

    Use 2nd Fundamental Theorem of Calculus to find derivative of f(x) = integral of 2x^2 (at the top) to x-5 (at the bottom) of square root of Sin(x)dx

    asked by Nick
  33. aerospace

    a ballon is in flight for 25 seconds. it took the baloon 7 seconds to reach its maximum height. how lobg was the balloons time of ascent

    asked by Anonymous
  34. physics

    calculate the impulse necessary to stop a 1500 kg car travelling at 90km/hour

    asked by Anonymous
  35. physics

    what is seismograph

    asked by annonyms
  36. English

    Can you please check if the following sentences are possible? Thank you very much. 1) Have you been to/in the new supermarket? No, not yet. 2) I've driven your car twice. Or It's the second time I've driven it. 3) How long ago did you go to Paris? Or When

    asked by Franco
  37. English

    I forgot to include the following sentences. 3)What kind/type of school do you go to? I go to a private school. 4) How do you spend your free time? What do you do in your free time? 5) How far do you walk to school? How many kilometers do you walk to

    asked by Franco
  38. physics

    A 27 g bullet traveling at 297 m/s is fired into a 0.468 kg wooden block anchored to a 100 N/m spring. How far is the spring compressed

    asked by sandhya
  39. physics

    A 27 g bullet traveling at 297 m/s is fired into a 0.468 kg wooden block anchored to a 100 N/m spring. How far is the spring compressed

    asked by sandhya
  40. marketing

    in th Van Dyke and bacon shoe stores, identify the buyers and sellers as well as the goods or services, how closely do real world conditions match the characteristics listed int he model?, are the sellers price takers, do they compete using price, is the

    asked by Laura
  41. physics

    A 65 kg crate is dragged across a floor by pulling on a rope attached to the crate and inclined 25° above the horizontal. (a) If the coefficient of static friction is 0.54, what minimum force magnitude is required from the rope to start the crate moving?

    asked by Sam
  42. literature

    In Twain's "The Private History of a Campaign that Failed," Smith, the blacksmith's apprentice, is given "ultimate credit" for A. naming the militia group's encampments. B. keeping the group trained and ready for battle. C. being killed in battle. D.

    asked by royalty
  43. physics

    A gun is fired in the air a distance of 900 m from a person. He hears the sound of the gun after 3 seconds. What is the speed of sound?

    asked by Shambhavi
  44. Business

    Research the Goldman Sachs website. Using your research findings from the Library and the Internet, develop both an EFAS (External Factors Analysis Summary) table and an IFAS (Internal Factors Analysis Summary) table. The tables are to be submitted in one

    asked by Corrine
  45. Chemistry

    What is the enthalpy change when 17.0 g of water is cooled from 36.0°C to 6.40°C?

    asked by Megan
  46. Chemistry

    A 26.5 g sample of ethylene glycol, a car radiator coolant, loses 675 J of heat. What was the initial temperature of ethylene glycol if the final temperature is 32.5°C (c of ethylene glycol = 2.42 J/gK)? Please help me, I don't even know where to begin!!

    asked by Megan
  47. Physics

    At a certain location, the Earth's magnetic field has a magnitude of 5.90E-5 T and points in a direction that is 71.6° below the horizontal. Calculate the magnitude of the magnetic flux through the top of a desk at this location that measures 132 cm by

    asked by VJC
  48. Physics

    A 17.0 cm diameter circular loop of wire is in a 1.35 T magnetic field. It is removed from the field in 0.190 s. What is the average induced emf?

    asked by VJC
  49. physics

    A 5.30 cm diameter wire coil is initially oriented so that its plane is perpendicular to a magnetic field of 0.570 T pointing up. During the course of 0.190 s, the field is changed to one of 0.350 T pointing down. What is the average induced emf in the

    asked by VJC
  50. physics

    A 34.7 cm diameter coil consists of 20 turns of circular copper wire 1.50 mm in diameter. A uniform magnetic field, perpendicular to the plane of the coil, changes at a rate of 9.00E-3 T/s. Determine the current in the loop. Determine the rate at which

    asked by VJC
  51. physics

    An emf is induced in a conducting loop of wire 1.24 m long as its shape is changed from square to circular. Calculate the average magnitude of the induced emf if the change in shape occurs in 4.21 s, and the local 0.123 T magnetic field is perpendicular to

    asked by VJC
  52. Chemistry

    At what temperature (oC) will a gas sample occupy 6.1 L if it originally occupies 17.8 L at 27.1oC? I did (v1/t1)=(v2)/(t2) v1=17.8 v2=6.1 t1=27.1 C = 300.25 K the answer i got for t2= 102.894 K which would be -170.106 C This doesnt seem right is it?

    asked by kellie
  53. Social Studies

    What is the name of the prime minister in Dominican Republic?

    asked by Tandra
  54. Math

    2.592/0.4 Round the quotient to the nearest hundredth

    asked by M.P.L
  55. US History

    Many immigrants who came to the United States expected to find streets paved with gold and easy oppurtuinities to make their fortunes. What were they most likely to find? Can I get a link to help, or something? Thanks -MC

    asked by mysterychicken
  56. physics

    A 14 N force with a fixed orientation does work on a particle as the particle moves through displacement d = (2i - 4j + 3k) m. What is the angle between the force and the displacement if the change in the particle's kinetic energy is (a) +7.54 J and (b)

    asked by Sam
  57. Trigonometry

    How do you simplify these equations: 1.)(2/cot^3(x) - cot^2 (x)) + (2/cot (x)-2) 2.) (2/ tan^2 (x)) + (2/ tan(x) -2)

    asked by Shen
  58. Physical Science

    The speed of a train increases fron 100km/h to 250km/h in 5 min. What is its acceleration

    asked by Jan
  59. Chemistry

    Substance A has a melting point of -10 degree celcius and a boiling point of 57 degree celcius. Sunstance B has a melting point of -67 degree celius and a boiling point of 15 degree celius. Room temperature is 20 degree celcius. (A) What is the physical

    asked by Claudia
  60. Math

    determine the force required in A and B in the figure on the worksheet to hold steady the 100 kg load pictured. Hint: The vertical components of A and B combined will hold the load

    asked by Tony
  61. english homework

    I have to write a letter....and i kinda suck at writing letters.... A national television station recently broadcast a programme about the town/city where you live. You found the information in the programme badly represented the area and you have decided

    asked by edyx17
  62. Fysikk

    En gjenstand blir sluppet fra toppen av et tårn, det går 12 sekunder fra man slipper gjenstanden til man hører lyden fra støtet mot bakken på toppen av tårnet. Hvor høy er tårnet? Lyd hastighegt 334 m/s Oddbjørn Norwegian

    asked by Oddbjørn
  63. physics

    A box is given a push so that it slides across the floor. How far will it go, given that the coefficient of kinetic friction is 0.30 and the push imparts an initial speed of 4.0 m/s?

    asked by KatieC
  64. math

    A(-3,-2) B(8,4)are the ends of the diameter of a circle. the tangent of the circle at point B is -11x+6y+64=0 the line L passes through A and the origin. line L has a gradient of 2/3 what is the coordinates that the line L and tangent at point B cross??

    asked by james
  65. lgebra

    How do I solve this litreal equation? Solve q = 1 - p for p in terms of q.

    asked by myra
  66. math

    A(-3,-2) B(8,4)are the ends of the diameter of a circle. the tangent of the circle at point B is -11x+6y+64=0 the line L passes through A and the origin. line L has a gradient of 2/3 what is the coordinates that the line L and tangent at point B cross??

    asked by james
  67. math

    A(-3,-2) B(8,4)are the ends of the diameter of a circle. the tangent of the circle at point B is -11x+6y+64=0 the line L passes through A and the origin. line L has a gradient of 2/3 what is the coordinates that the line L and tangent at point B cross??

    asked by james
  68. chemistry

    have my results from a simple titration experiment (sodium carbonate against hydrochloric acid) Average titre of 53.27 cm3 which i am happy with but how can i state that my results are accurate and how can i convince my lecturer my results are

    asked by paul m
  69. physics

    would an object weigh more or less if there were no atmosphere on earth

    asked by chetan
  70. english

    help me please with one sentence with ''up-to-date ''

    asked by Anonymous
  71. math

    A(-3,-2) B(8,4)are the ends of the diameter of a circle. the tangent of the circle at point B is -11x+6y+64=0 the line L passes through A and the origin. line L has a gradient of 2/3 what is the coordinates that the line L and tangent at point B cross??

    asked by james
  72. Psysik

    From the top of a tower is an object of mass 25 kg lowered at constant speed, 4 m / s with a rope to the ground. After 10 seconds of the rope breaks, and the object falls freely. From the moment (the rope breaks) there is 12 seconds to those standing on

    asked by Oddbjøtn
  73. chemistry

    What ions separate once added to water and how did the reaction occur?

    asked by Kelly10
  74. chemistry

    What ions separate once added to water and how did the reaction occur?

    asked by Kelly10
  75. chemistry

    What ions separate once added to water and how did the reaction occur?

    asked by Kelly10
  76. english

    someone can help me with a discription with this KEY WORDS: advertising billboards, buskers, clowns, drama groups, fireworks, graffiti, 'live statues', musicians, open-air concerts, pavement artists, sculptures, statues.

    asked by julia
  77. math

    A(-3,-2) B(8,4)are the ends of the diameter of a circle. the tangent of the circle at point B is -11x+6y+64=0 the line L passes through A and the origin. line L has a gradient of 2/3 what is the coordinates that the line L and tangent at point B cross??

    asked by james
  78. Physics

    A 10 kg box is pulled across the floor at a constant velocity of 3.0 m/s. If the box is pulled with a force of 40 N, what is the size of the frictional force between the box and the floor?

    asked by Diana
  79. math

    A(-3,-2) B(8,4)are the ends of the diameter of a circle. the tangent of the circle at point B is -11x+6y+64=0 the line L passes through A and the origin. line L has a gradient of 2/3 what is the coordinates that the line L and tangent at point B cross??

    asked by james
  80. Physics

    A bullet of mass is fired horizontally with speed at a wooden block of mass resting on a frictionless table. The bullet hits the block and becomes completely embedded within it. After the bullet has come to rest within the block, the block, with the bullet

    asked by Eden
  81. math

    A(-3,-2) B(8,4)are the ends of the diameter of a circle. the tangent of the circle at point B is -11x+6y+64=0 the line L passes through A and the origin. line L has a gradient of 2/3 what is the coordinates that the line L and tangent at point B cross??

    asked by james
  82. math

    A(-3,-2) B(8,4)are the ends of the diameter of a circle. the tangent of the circle at point B is -11x+6y+64=0 the line L passes through A and the origin. line L has a gradient of 2/3 what is the coordinates that the line L and tangent at point B cross??

    asked by james
  83. chemistry

    if a certain pressure supports a 256 column of mecury, how high a column of water would it support?

    asked by lavonne
  84. chemistry

    A steel tank contains carbon dioxide at 34 celsius and is at a pressure of 13.0 atm. Determine the internal gas pressure when the tank and its contents are heated to 100 celsius

    asked by lavonne
  85. Physics

    From the top of a tower is an object with mass 25 kg is lowered at constant speed, 4 m / s with a rope to the ground. After 10 seconds of the rope breaks, and the object falls freely. From the moment (the rope breaks) there are 12 seconds to those standing

    asked by Oddbjørn
  86. Physics

    An crate weighing 576 N is resting on a plane inclined 31° above the horizontal. (a) Calculate the magnitude of the acceleration (ignore friction). (b) After 4.50 s, how fast will the crate be moving?

    asked by Bloopps
  87. chem-please help!!!!!

    when a 25.0 mL sample of an unknown acid was titrated with a 0.100 M NaOH solution. Determine Ka for the unknown acid. Volume NaOH = 25 mL; pH=8.25

    asked by Rosemary
  88. physics

    A 512 kg satellite is in a circular orbit about the Earth at a height above the Earth equal to the Earth's mean radius. (a) Find the satellite's orbital speed. (b) Find the period of its revolution. (c) Find the gravitational force acting on it.

    asked by Erica
  89. College Math

    Your small library of books consists of 6 novels, 7 mathematics books, and 1 biology book. Calculate the number of ways to arrange them on a bookshelf for each of these situations. a) The books can be arranged in any order? b The novels must be together

    asked by Tian
  90. physics

    A sample of blood is placed in a centrifuge of radius 20.0 cm. The mass of a red blood cell is 3.0 10-16 kg, and the magnitude of the force acting on it as it settles out of the plasma is 4.0 10-11 N. At how many revolutions per second should the

    asked by Erica
  91. Algebra 2

    1. Find the slope of the line through the pair of points. (-1/3,0) and (-1/2,-1/2) Choices: -3 1/3 -1/3 3 2. Write in standard form an equation of the line passing through the given point with the given slope. Slope=8/7; (5,-3) Choices: -8/7x+y=-61/7

    asked by Jacob
  92. C programming

    A few questions, all involving "for" loops that I am unsure how to do (Thank you in advance for the help): Q1.) Write a table of conversions from Celsius to Rankin. Allow the user to enter the starting temperature and increment between lines. Print 25

    asked by Randy
  93. spanish

    Help with spanish!!!! Have to put correct words in the banks. 2 of them will not be used.? Querida Beth: 1) (blank) esta todo bien y esperamos que 2) (blank) tambien lo este. 3) (blank) lo pensemos y lo conversemos, tu padre y yo no estamos contentos con

    asked by jeff
  94. earth

    On planet Tehar, the free-fall acceleration is the same as that on Earth but there is also a strong downward electric field that is uniform close to the planet's surface. A 2.00 kg ball having a charge of 5.00 µC is thrown upward at a speed of 29.2 m/s

    asked by Anonymous
  95. English

    Bamboo belongs to the grass family. I have to tell if the verb is transitive or intransitive. belongs is the verb and it's intransitive

    asked by Hayley
  96. Physics

    A car starts from rest and travels along a circular track with a radius of 55.0 meters. The car starts out at a position due East of the center of the track, heading due North initially around the track, which is counterclockwise. The car increases its

    asked by Diana
  97. English

    Can you please check if the following paraphrase (?) of Wordsworth's poem is correct? Thank you very much. 1)This poem was probably inspired by a walking tour of the Scottish Highlands which W., his sister Dorothy and Coleridge went on in 1893. 2)In the

    asked by Franco
  98. physics

    A particle moves along a straight path through displacement i = (2.2 m) + c while force = (3.2 N) - (3.8 N) acts on it. (Other forces also act on the particle.) What is the value of c if the work done by on the particle is (a) zero, (b) 3.2 J, and (c) -7.3

    asked by Sam
  99. calculus

    Find the number c if the line y=x is to be tangent to the graph of f(x)=x^4+c. what are the coordinates of the points of tangency?

    asked by Dom
  100. Math

    How do you factor m^2-6m

    asked by heather
  101. introductory Algebra

    A small slot machine holds 500 coins consisting of nickels, dimes, and quarters. The number of quarters is twice the number of dimes. If the value of all the coins is $88.00, how many nickels, were in the slot machine?

    asked by Julie
  102. math check

    How does this c(c-2)-c-1(c+3) come to 3-4c?

    asked by heather
  103. Math

    How do you factor 16-x^2

    asked by heather
  104. shifts

    Which sentence contains a shift in subject and voice? a) His book was returned to the bin, and then Johnny carried the other books home. b) The lake contained garbage that flows through the storm drains. c) If a student does not understand the assignment,

    asked by Anonymous
  105. chem lab

    ok i have to plot a graph for my kinetics our teacher said in the end it'd the end the graph would give me numbers like this, y = 1.3x10^2x-11.2 r^2 = 1 but when i plot it, i get weird numbers. am i supposed to plot exponents as i wrote them below? also

    asked by jessie
  106. Algebra, explain?

    So I have to solve this problem 9a=6(a+4) And then I wrote down: 9a=6a+24 but I don't know what to do from there, can someone explain to me please?

    asked by Allyson
  107. calculus

    Gravel is being dumped from a conveyor belt at a rate of 30 cubic feet per minute. It forms a pile in the shape of a right circular cone whose base diameter and height are always equal to each other. How fast is the height of the pile increasing when the

    asked by jon
  108. calculus

    Gravel is being dumped from a conveyor belt at a rate of 30 cubic feet per minute. It forms a pile in the shape of a right circular cone whose base diameter and height are always equal to each other. How fast is the height of the pile increasing when the

    asked by jon
  109. math 20 (finance)

    Can someone walk me through how I would enter this into the calculator TMV solver. Can it be done? Jeremy has a balance owing of $4000 on his credit card. The credit-card company charges 18.0% annual interest, compounded monthly. 1.) If Jeremy makes

    asked by Sandi
  110. trig

    f(x)= 2sec(x-3.14/4)-1

    asked by rlw
  111. math

    Does absolute value n+m= absolute value n + absolute value m for all integers n and m? If so give examples if not give a counterexample.

    asked by m
  112. Algebra, ( Check please)

    5h-7=2(h+1) I got, 5h-7=2h+1 and then I added -7 plus 1, and got -6 So 5h-6=2h? Could someone explain what I did wrong and help me correct it?

    asked by Allyson
  113. MATH

    SHOW IN A SKETCH 3/5 OF AN HOUR

    asked by JORDAN
  114. chemistry

    How much heat is required to warm 1.60 L of water from 26.0 degree C to 100.0 degree C? (Assume a density of {1.0 g/ml for the water.)

    asked by Mely
  115. US History

    1. Colonial American society was organized according to a belief in a. a strong middle class b. a classess society c. equality of opportunity d. inequality C? 3. Why did most Puritans come to North America? a. to avoid imprisonment b. to set up their own

    asked by mysterychicken
  116. chemistry

    What mass of natural gas CH_4 must you burn to emit 259 kJ of heat?

    asked by Mely
  117. physics

    A 7000 kg helicopter accelerates upward at 0.70 m/s/s while lifting a 1000 kg car to a mountaintop for a TV commercial photo shoot. -What tension must the cable be able to withstand without breaking?

    asked by Diana
  118. English

    I forgot to include a few other sentences on the paraphrase Wordsworth's "The Solitary Reaper".Thank you very much for helping me. 1)The poet gives universal significance to the girl’s song by introducing a remote, ancient dimension in time and space.

    asked by Franco
  119. chemistry

    How much heat is required to warm 1.30 L of water from 30.0 degrees C to 100.0 degrees C? (Assume a density of 1.0 g/mL for the water.)

    asked by Mely
  120. managerial economics

    Consider the following short-run production function (where L = variable input, Q =output): Q = 10L - 0.5L2 Suppose that output can be sold for $10 per unit.

    asked by Anonymous
  121. chemistry

    95.0 mL of H_2O is initially at room temperature (22 degree C). A chilled steel rod at 2 degree C is placed in the water. If the final temperature of the system is 21.3 degree C, what is the mass of the steel bar?

    asked by Mely
  122. chemistry

    what should i be aware of when heating NH4andCO3

    asked by monica
  123. US History

    4. The power of judicial review allows federal courts to decide a. who will be President if the Electoral College is tied b. if state and federal laws are constitutional c. if legislative acts should be signed into law d. on the size of the military B? 9.

    asked by mysterychicken
  124. Chemistry

    1. Can I2 react with Cyclohexane to form any product (without or without spectroscophic properties)? 2. Can I2 react with t-butyl or n-butyl alcohol to form any organic product? 3. What is the complex formed between I2 and t-butyl alcohol? Is this complex

    asked by John
  125. physics

    The only force acting on a 3.0 kg body as it moves along the positive x axis has an x component Fx = -9x N, where x is in meters. The velocity of the body at x = 2.3 m is 9.7 m/s. (a) What is the velocity of the body at x = 4.4 m? (b) At what positive

    asked by Megan
  126. math

    How do you simplify: a/b^2+a^3/b^3-1/b

    asked by courtney
  127. math

    How do you simplify 3x/5y+1/7

    asked by courtney
  128. US History

    11. The Spanish established outposts in the Southeast to a. trade with Native Americans b. encourage Spanish immigration c. search for previous metals d. protect its trade routes No idea... 13. One thing a person could do in 1900 but not in 1865 was a.

    asked by mysterychicken
  129. Algebra, check please?

    5(N+2)=3/5(5+10n) And then I wrote down 5n+10 But what would do after that? I know that the equal sign basically cuts it inhalf so that it's two problems.. but I just don't know what to do from that point. Help please? -Allyson

    asked by Allyson
  130. Algebra-Please help

    I'm really stuck on these problems- Simplify 6xy(3xy)^-2? Simplify 12xyz^-2/8x^-2z Thank you

    asked by Jessie
  131. Chemistry

    An automobile antifreeze mixture is made by mixing equal volumes of ethylene glycol (d=1.114 g/mL; M=62.07 g/mL) and water (d=1.00 g/mL) at 20 degrees C. The density of the mixture is 1.070 g/mL. Expreess the concentration of ethylene glycol as volume

    asked by Stacey
  132. math

    explain in words how to solve 39 + five squared - 96 * 7 / (9 - 4)

    asked by kim
  133. Compter programing Design

    Design a program that will ask the user to enter the amount of a purchase. The program should the compute the state and county sales tax. Assume the state sales tax is 4 percent and the county sales tax is 2 percent. The program should display the amount

    asked by BJ
  134. College mechanic vibration

    A half-car model of an automobile suspension system is shown below. You are to design its suspension systems (values of spring constants and damping constants). Generally, for ride comfort, it is desired to have the bounce motion at low frequency and the

    asked by joe
  135. Math

    Kay is making beaded belts for her friends from 6.5 meters of cord.On belt uses 0.625 meters of cord.How many belts can she make?

    asked by Kaitlyn
  136. financial accounting

    Why is it necessary to prepare formal financial statements if all of the data are in the statement columns of the worksheet? Discuss

    asked by Joan
  137. Chemistry

    A solution of vinegar is 5.16% by mass aetic acid, CH3CO2H, in water. Assuming the density of vinegar is 1.00 g/mL, what is the molarity of the acetic acid?

    asked by Missy
  138. Algebra, help

    So, I've written down 22x+70=17x-95 and I think you would add together 22 and 17, to get 39x right? and then you would subtract 70 from the -95 and get that number and solve, correct?

    asked by Allyson
  139. Chemistry

    Concentrated sulfuric acid used in the laboratory is 92% H2SO4 by mass. Calculate the mass of water in a 100 g solution of this acid in kg.

    asked by Steph
  140. math

    explain how you could show five less than a number using an expression

    asked by kayalin
  141. Maths

    If dy/dx = 8x - 3x^2 , then how you show that dy/dx is postive when 0

    asked by Remy
  142. science

    how many light years is 94.6 trillion killometers

    asked by Anonymous
  143. Chemistry

    Given a 2.5 kg solution of phosphoric acid and water (56 % phophoric acid, by mass), calculate the number of moles of phosphoric acid.

    asked by Emily
  144. Calculus

    A particle is moving along the curve y = 2 √{3 x + 7}. As the particle passes through the point (3, 8), its x-coordinate increases at a rate of 5 units per second. Find the rate of change of the distance from the particle to the origin at this instant.

    asked by Jack
  145. Calculus

    A particle is moving along the curve y = 2 √{3 x + 7}. As the particle passes through the point (3, 8), its x-coordinate increases at a rate of 5 units per second. Find the rate of change of the distance from the particle to the origin at this instant.

    asked by Jack
  146. Math

    what is y-12=16?

    asked by Lexi
  147. Math

    what is 18/25 divided by 2?

    asked by Misti
  148. Math

    what is 0.5-0.0281=g?

    asked by Christi
  149. Math

    what is 837 divided by f=31?

    asked by Sandi
  150. Math

    how many pounds equal one ton?

    asked by Doris
  151. Chemistry

    A solution contains .370 mol of isopropanol (C3H7OH) dissolved in 1.700 mol of water. A) What is the mole fraction of isopropanol? B) What is the mass percent of isopropanol? C)The molarity of isopropanol?

    asked by Natalie
  152. Math

    find the perimeter of a regular octagon with sides of 5.5cm.

    asked by Jerrry
  153. Math

    find the range of the given distances: 2km, 101km, 125km, 227km, and 307km.

    asked by Faye
  154. Math

    what is 9+6-4x3+12?

    asked by Rick
  155. Math

    if you roll a pair of fair six-sided number cubes, what is the probability of rolling two numbers whose sum is 2?

    asked by Teresa
  156. Math

    complete the pattern: 1, 64, 2 ,32, 4, 16, ___ , ____.

    asked by Donna
  157. Algebra-Please check my answers

    Posted by Jessie on Monday, October 18, 2010 at 3:48pm. I think I figured it out-please check I'm really stuck on these problems- Simplify 6xy(3xy)^-2? I think this is 2/3xy choices were 2/xy 3xy 2xy 2/3xy Simplify 12xyz^-2/8x^-2z choices were 3x^2y/2z^3

    asked by Jessie
  158. ap chemistry

    Cl2 + 2koh-->kcl _kclo +H2O 3KClo-->2Kcl+kclo3 4kclo3-->3kclo4 +kcl what mass of cl2 (g) is required to make 234g kclo4

    asked by adele
  159. chem 101

    how many grams of oxalic acid dihydrate to completely neutralize 25ml of 0.12 M of sodium hydroxide

    asked by andrew
  160. Maths Urgent

    I have worked out the gradient funtion. If dy/dx = 8x - 3x^2 , then how you show that dy/dx is postive when 0

    asked by Remy
  161. English

    I'm having trouble with transitive and intransitive verbs. I have to pick out the verb and tell if it's transitive or intransitive. Some reach a height of 120 feet. reach=intransitive The stems measure a foot in diameter. measure=intransitive

    asked by Doug
  162. french

    Could you check these thanks. Directions: Répondez en utilisant un pronom (en). 1. Il y a combien de chambres dans cet hôtel? (cent) Answer: Il y en a cent. 2. Il y a combien de lits dans chaque chambre? (deux) Answer: Il y en a deux 3. Il y a combien de

    asked by Rachel
  163. MTH 156

    I am having trouble with this question, please help. If a person makes $30,000 in 2004 and the inflation rate is 4% annually, how much is this salary worth in the year 2008 (in terms of 2004 dollars)?

    asked by Tammy
  164. Math.

    How Do You Solve 18 m=8? I Don't Even Know Where To Start.

    asked by Cheyanne
  165. PreCalc

    what is the cot of theta if the cos of theta = 4/9 and theta lies in quadrant IV

    asked by T
  166. math

    Write three number that are greater than 1,543,000 but less than 1,544,000

    asked by jose
  167. arithmetic

    graphing/rounding discmals

    asked by Meranda
  168. chemistry

    A steel tank contains carbon dioxide at 34 celsius and is at 13.0 atm. Determine the internal gas pressure when the tank and its contents are heated to 100 clesius. Do i need to convert to kevins here. There are answers using both, so which is correct.

    asked by lavonne
  169. history

    what was the napoleonic code?

    asked by Emma
  170. history

    how did napoleon declare himself emperor?

    asked by Emma
  171. history

    what was napolean like in the north america?

    asked by Emma
  172. history

    what was the battle austerlitz?

    asked by Emma
  173. history

    what was the battle of trafalgar?

    asked by Emma
  174. 5th grade SCIENCE

    Why is a short curcuit called a short curcuit?

    asked by DJ
  175. English

    I still have a few doubts about these sentences. I really hope you can have a look at them. I like wearing casual clothes and also sports clothes. (corrections: and sports clothes too/ as well as sports clothes) 2) I'm holding/carrying a hiking pole

    asked by Franco
  176. Physics

    Assume cathy has to drag her suitcase along the floor of the airport terminal by a rope. The rope makes a 40.0 degree angle with the horizantal. The suitcase has a mass of 36.0 kg and Cathy pulls on the rope with a force of 65.0 N. a) What is the magnitude

    asked by Lisa
  177. Math 5th

    i need help in a hurry!!!!!!! I need to know what the fractions-one half and so on until one fourth us equal to bye tomrrow!!!!!!!!!!! please help!! :)

    asked by Avi
  178. Social Studies

    What are the 3 terms given to the U.S. system of economics?

    asked by Steve
  179. engineering

    Using mechanics of materials principles, (i.e. equations of mechanical equilibrium applied to a free-body diagram), derive the following equations: s’ = s cos2q = s[(1+ cos 2q) / 2] t' = s sinq cosq = s [sin 2q / 2] s=sigma, q=theta, t=tau I have looked

    asked by Bob
  180. Chemistry

    Calculate the temperature, in K, of 2.20 moles of gas occupying 3.50 L at 3.30 atm.

    asked by jswass
  181. 2nd grade

    How do you label money ? The coins have the amount in them . I don't understand ?

    asked by Brianna
  182. science

    an ethereal solution contains benzoic acid, 9-fluorenone, and ethyl 4-aminobenzoate. why would ethyl 4-aminobenzoate and 9-fluorenone not be extracted from this ethereal solution by aqueous base?

    asked by Amy
  183. college

    A coin dealer, offered a rare silver coin, suspected that it might be a counterfeit nickel copy. The dealer heated the coin, which weighed 14.0 g to 100°C in boiling water and then dropped the hot coin into 29.5 g of water at T = 15.0°C in an insulated

    asked by andrea
  184. English

    I will try this again. I have to identify the verb and tell if it's transitive or intransitive. It is related to wheat, oats, and barley. is related=intransitive In Japan the hollow stems serve as water pipes. serve=intransitive

    asked by Doug
  185. Chemistry

    1. A small piece of zinc reacts with dilute HCl to form H2, which is collected over water at 16°C into a large flask. The total pressure is adjusted to barometric pressure (752 torr), and the volume is 1538 mL. Use Table 5.2 to help calculate the partial

    asked by Carter
  186. Social Studies

    what you call the people that were in the mayflower ship

    asked by Sumaiya
  187. english

    compare and contrat your abilities as an academic writer now as opposed to when you began your studies at the University of phoenix. Using four comparatives and four superlatives within responses.

    asked by Tamara
  188. math

    tayior uses squares to make a pattern which square is not in her psttern

    asked by yard
  189. Chemistry

    How many moles of solute particles are present in 1 L of 1.20 M KBr?

    asked by Shea
  190. math

    i don't understand stem and leaf plots

    asked by kurt
  191. Chemistry

    How many moles of solute particles are present in 1 L of aqueous 0.08 M ethanol (C2H5OH)?

    asked by Blair
  192. math

    4+100=

    asked by yard
  193. Geometry

    when you have a graph with just dots and the dots make a figure. Then the dots on the outside are the posts and the inside dots are trees. what equation can i use to get the area of the figure using only posts and trees?

    asked by Cheyenne
  194. Chemistry

    The U.S. Food and Drug Administration lists dichloromethane (CH2Cl2) and carbon tetrachloride (CCL4) among the many cancer-causing organic compounds. what are the partial pressures of these substances in the vapor above a mixture containing 1.75 mol of

    asked by Monica
  195. Physical Science

    If you do 600J of work hoisting a 20kg bale of hay, to what height did you lift

    asked by Lo
  196. Chemistry

    When 0.526 L of Ar at 1.20 atm and 227°C is mixed with 0.270 L of O2 at 501 torr and 127°C in a 400. mL flask at 27°C, what is the pressure in the flask?

    asked by Carter
  197. Chemistry

    Calculate the vapor pressure of a solution of 33.0 g of gylcerol (C3H8O3) in 500g of water at 25 degrees C. the vapor pressure of water at 25 degrees C is 23.76 torr

    asked by Missy
  198. math

    If Leah is 6 years older than Sue, and John is 5 years older than Leah, and the total of their ages is 41. Then how old is Sue? How do you know what and, is, and older mean in mathematical terms?

    asked by amelie
  199. Chemistry

    The vapor pressure of pure ethanol at 20 degrees C is 44 mmHg, and the vapor pressure of pure methanol at the same temperature is 94 mmHg. In a solution of the two, the mole fraction of ethanol is .439; the mole fraction for methanol is .561. Calculate the

    asked by Stephany
  200. chemistry

    Suppose 150.0 mL of 0.50 M HCl and 150.0 mL of 0.50 M NaOH, both initially at 24.0°C, are mixed in a thermos flask. When the reaction is complete, the temperature is 27.4°C. Assuming that the solutions have the same heat capacity as pure water, compute

    asked by andrea
  201. Chemistry

    A sample of an unknown gas effuses in 11.1 min. An equal volume of H2 in the same apparatus at the same temperature and pressure effuses in 2.02 min. What is the molar mass of the unknown gas?

    asked by Ashley
  202. Chemistry

    A dilute electrolyte solution is prepared by dissoving iron (III) chloride in water. It is found to have a freezing point of -2.10 degrees C. Calculate the molality of the solution.

    asked by Gracyn
  203. Organic Chemistry I

    You have isolated one of the isomeric dimethylcyclopentanes. on reaction it gives you 3 monochloroisomers, which of the possible pentanes is it? How do i do this? they don't give any choices, so how do i figure it out?

    asked by Nick
  204. Physics

    A 200N force acts on a 30kg mass on a horizontal surface against 50N of friction. What is the speed of the mass after 5 seconds?

    asked by Teah
  205. English

    The best way to get there is to take the bus. In this sentence is the infinitive phrase "to take" an adjective?

    asked by Jake
  206. Chemistry

    Acetic acid is a polar molecule and can form hydrogen bonds with molecules. Therefore, it has a high soulubility in water. Yet acetic acid is also soluble in benzene (C6H6), a nonpolar solvent that lacks the ability to form hydrogen bonds. A solution of

    asked by Karly
  207. algebra, please help

    the membership fee for oining a camp association is 45 a local campground charges members of the camping associatons 35 per night for a campsite and non members 40 per night, after how many nights of camping is the total cost for the members includingthe

    asked by Allyson
  208. Chemistry

    A solution made from .650g of an unknown compound in 27.8 g of diphenyl gave a freezing-point depression of 1.56 degrees C. Calculate the molality of the solution. (Kf for diphenyl is 8 degrees C/m)

    asked by Kolby
  209. chemistry

    Calculate number of moles of aluminum in 1.50kg of Al

    asked by Samantha
  210. government

    This has to do with when the English settlers moved from England/Britian to the New World. "How did such loyal englishmen become a "rebellious group of deliquents"??

    asked by Morrissa
  211. Algebra

    A saline solution was made by mixing 11 ml of a 36% saline solution and 6 ml of a 53 % saline solution. How do I find the consentration of the new mixture?

    asked by Hannah
  212. Chemistry

    Lake VIda is an enormous hypersaline lake that lies under 19 m of ice in the Dry Valleys region of Antartica. The freezing point of this water is approximately -15.0 degrees C, owing to the fact that it is many times as salty as typical saltwater.

    asked by Shea
  213. 4th grade

    what are the nouns in the sentence: Ryan will learn to swim this summer.

    asked by emma
  214. Physics 11

    A river has a current of 5 m/s. A boat tries to head directly across at 4 m/s. When the boat reaches the other side it is 30m downstream. How wide is the river ?

    asked by Denny
  215. college chemistry

    Use standard enthalpies of formation to determine ƒ¢Horxn for: 2NH3(g) + 3O2(g) + 2CH4(g) ¨ 2HCN(g) + 6H2O(g) in kilojoules. Find the change in internal energy for this reaction in kJ

    asked by jake
  216. Chemistry

    A 271-mL of a sugar solution containing 1.79g of the sugar has an osmotic pressure of 30.1 mmHg at 35.1 degrees C. What is the molar maas of the sugar?

    asked by John
  217. trigonometry

    how to solve sin 4x= cosx(4 sinx - 8 sin ^3x)

    asked by cristina
  218. 5th grade

    how to keep a watershed heathly?

    asked by alex
  219. Chemistry

    Pheromones are compounds secreted by the females of many insect species to attract males. One of these compounds contains 80.78%C, 13.56%H, and 5.66%O. A solution of 1.41g of this pheromone in 9.23g of benzene freezes at 2.73 degrees C. what are the

    asked by Rory
  220. social studies

    what territory did Samule de Champlain explore

    asked by Billie
  221. physics

    Question part Points Submissions 1 0/1 5/15 Total 0/1 You ride your bike for 1.5 h at an average velocity of 11 km/h, then for 30 min at 15 km/h. What is your average velocity?

    asked by Casey
  222. Chemistry

    To prevent the presence of air, noble gases are placed over highly reactive chemicals to act as inert "blanketing" gases. A chemical engineer places a mixture of noble gases consisting of 4.50 g of He, 15.0 g of Ne, and 33.6 g of Kr in a piston-cylinder

    asked by Arian
  223. probability

    Microbes in a certain colony exposed to radiation have a 1/6 chance of being mutated. a. If ten microbes from the colony are sampled, what is the probability that at most 4 will be mutated? b. If microbe from the colony is examined one by one, what is the

    asked by lisa
  224. English

    In Japan the hollow stems serve as water pipes. Would the verb in this sentence be an intransitive or transitive? intransitive

    asked by Amy
  225. math

    The city council has decided to add a 0.3% tax on motel and hotel rooms. If a traveler spends the night in a motel room that costs $55 before taxes, how much will the city receive in taxes from him? I am studying for a exam, would you also know a good

    asked by amelie
  226. chemistry

    Calculate the number of moles of CaCO3 in 3.20g of Calcium Carbonate.

    asked by Samantha
  227. Chemistry

    What is the empirical formula for Dichloroethane?

    asked by Amber
  228. Chemistry

    At 2000°C, 5.0×10-3 mol CO2 is introduced into a 1.0 L container and the following reaction comes to equilibrium: 2CO2(g) 2CO(g) + O2(g) Kc = 6.4×10-7 a. Calculate the equilibrium concentrations of CO and O2. b. What fraction of the CO2 is decomposed at

    asked by mg
  229. Chemistry

    A solution contains .370 mol of isopropanol (C3H7OH) dissolved in 1.700 mol of water. What is the mass percent of isopropanol? What is the molality of isopropanol? i've done it a couple times now and i must have something off

    asked by Luke
  230. physics

    as a ball moves upwards in the air, by how much does its speed decrease each second?

    asked by none
  231. physics

    as a ball moves upwards in the air, by how much does its speed decrease each second?

    asked by none
  232. Chemistry

    Shown below is the chemical equation for the thermal decomposition of calcium carbonate. CaCO3(s) CaO(s) + CO2(g) H°rxn = 175 kJ How will the amount (not concentration) of CaCO3(s) change with the following stresses? CO2(g) is removed? Decrease, Increase

    asked by Adam
  233. Chemistry

    The decomposition of HI(g) is represented by the equation: 2HI(g) H2(g) + I2(g) Kc= 64 at 25°C. If the equilibrium concentrations of H2 and I2 at 400°C are found to be [H2] = 5.4x10-4 M and [I2] = 8.8x10-3 M, what is the equilibrium concentration of HI?

    asked by Adam
  234. Calculus

    (1 pt) If f(x) = 2 √x, use the definition of derivative to find f′( x ).

    asked by Trevor
  235. US History

    14. The main argument in support of the Bill of Rights was that a. they would help opponents of slavery gain the upper hand b. without them the US would be a republic government c. they would protect the people from a tyrannical government d. without them

    asked by mysterychicken
  236. chemistry

    What is the net ionic equation for the reaction of AgNO3 with Ba(OH)2?

    asked by Brandon
  237. Chemistry

    The U.S. Food and Drug Administration lists dichloromethane (CH2Cl2) and carbon tetrachloride (CCl4) among the many cancer-causing chlorinated organic compounds. what are the partial pressures of these substances in the vapor above a mixture containing

    asked by Claire
  238. Algebra-Please check my answers

    Posted by Jessie on Monday, October 18, 2010 at 3:48pm. I think I figured it out-please check I'm really stuck on these problems- Simplify 6xy(3xy)^-2? I think this is 2/3xy choices were 2/xy 3xy 2xy 2/3xy Simplify 12xyz^-2/8x^-2z choices were 3x^2y/2z^3

    asked by Jessie
  239. 3rd grade

    juan says "when you put together unequal groups, you can only add." is he correct?

    asked by kesha
  240. computers

    What are bottle geeks

    asked by jhoin
  241. Grammar

    Possessive nouns Money might be sewn into ______ coat linings. Answers A. Women's B. Woman's C. Womens' D. Woman's Is it b

    asked by Kolten
  242. social studies

    so Sue the territory Samule de Champlain explored is canada?

    asked by Billie
  243. physics

    need some help, A ball with an initial angular velocity of 20.0 rads /s and a rotational inertia of 0.4kgm rolls uphill with an acceleration of -4.00 rad/s . Calculate the net torque acting on the ball. Calculate the angular displacement after 5.00 s.

    asked by justin
  244. physics

    really stuck, a 90 kg skier has 140 KJ of total mechanical energy when he is at a height of 120m above the bottom of the hill. calculate the skiers kinetic energy. calculate his speed?

    asked by mitch
  245. physics

    5 mL of a liquid have a mass of 1 og what is the density

    asked by amy
  246. physics

    A 250-kg crate is pushed horizontally with a force of 710 N. If the coefficient of friction is 0.20, calculate the acceleration of the crate.

    asked by das
  247. math

    Jim is able to sell a hand-carved statue for $670 which was a 35% profit over his cost. How much did the statue originally cost him?

    asked by amelie
  248. english

    Life is either a daring adventure or nothing. what does it mean

    asked by 000
  249. US History

    23. A comparison of Native American societies in North America reveals that a. culture and language were the same everywhere b. distinct cultures arose from differences in local climate and terrain c. all were nomadic with little knowledge of agriculture

    asked by mysterychicken
  250. math

    the prison popuation of 9 different countries are: 50, 30, 10, 50, 60, 50, 20, 40, 50. What is the range and standard deviation? Explain. I know the range is 50, but i cant figure out the standard deviation.

    asked by john
  251. Economics

    True or false: The US must remove tariffs and quotas to open trade with foreign countries. Consider the following issues: The definition of tariffs and quotas. The strength of the dollar on domestic and global economies. Benefits from tariffs or quotas,

    asked by Emily
  252. english

    In the sentences below, which are transitive or intransitve verbs? 1. It is related to wheat, oats and barley. 2. Their size might surprise you. 3. Some reach a height of 120 ft. 4. The stems measue a foot in diameter

    asked by Lori
  253. Music Theory

    Trumpet- I need the notes and fingerings for Concert Scales: C, F, B flat, E flat, A flat, D flat, and G, and also all the notes and fingerings for the Chromatic scale from G to G (two octaves) for the trumpet. -any help would be greatly appreciated (:

    asked by Andi
  254. physics

    At an accident scene on a level road, investigators measure a car's skid mark to be 58 m long. It was a rainy day and the coefficient of friction was estimated to be 0.46. Use these data to determine the speed of the car when the driver slammed on (and

    asked by xz
  255. physics

    A car starts from rest and travels along a circular track with a radius of 55.0 meters. The car starts out at a position due East of the center of the track, heading due North initially around the track, which is counterclockwise. The car increases its

    asked by Diana
  256. 7th grade

    I have a critical thinking problem I need help with...you can divide each side of an equation by the same non zero value. Explain what would result from the equation 4 x 0 = 5 x 0 if you could divide each side by zero and if 0/0 = 1.

    asked by Hailey
  257. American Corrections

    during the 19th century, american society became increasingly: a) rural b) homogeneous c) heterogeneous d) non-industrial I think the answer is either a or d but I just can not find it in my book anywhere...Please help me if you can. I have even googled

    asked by Melisa
  258. Physical Science

    What are at least twenty words and clues relate to the Gas Law?

    asked by Aaliyah
  259. Math

    Make up a set of at least 12 numbers that have the following landmarks maximum 18 range 13 mode 7 and median 12

    asked by Kiki
  260. English

    What do each set of words have in common? swallows root penned slops

    asked by Joyce
  261. 12th grade

    a marble that is rolling across a lab table has a velocity of 0.7m/s. If the table is 0.9m high, how far from the edge of the table will the ball travel in the horizontel direction before it hits the floor ?

    asked by Anonymous
  262. Physical Science

    What are twenty questions that you could ask a scuba diver about scuba gear and diving?

    asked by Aaliyah
  263. Math

    What are all the whole number pairs of length and width values that give an area of 24 square meters for a rectangle?

    asked by Nicole
  264. PHYSICS ---HELP!

    A laser beam is directed at the Moon, 380,000 km from Earth. The beam diverges at an angle of 6.2×10−5 rad. What diameter spot will it make on the Moon? Express your answer using two significant figures.

    asked by LIZ
  265. calculus

    Use differentials (or equivalently, a linear approximation) to approximate ln(1.02) as follows: Let f(x)=ln(x) and find the equation of the tangent f(x) line to at a "nice" point near 1.02 . Then use this to approximate ln(1.02) .

    asked by Denzel
  266. chemistry

    If the specific heat of a metal is 0.150 cal/g-deg, what is its approximate weight?

    asked by Anastasia
  267. science

    how many electrons at most can occupy a given orbital?

    asked by mic
  268. Algebra

    If a function is given and it asks if a point is on the graph. How am I supposed to solve this? Like for example: f(x)= (2x)/(x-2) point: (1/2,-2/3)

    asked by Amy
  269. Math

    The Lappans buy 3 large sandwich wraps to serve at a picnic. 9 people in all will be at the picnic. Show 3 different ways to cut the sandwiches so that each person gets an equal share.

    asked by Jimmy
  270. Algebra

    Choose the equivalent expression(3h^-2j^3k)^2(hj^-5k^3)^-2 The signs that look like minuses are negative signs Answers: 3h^-6j^16K^-4 9h^-2j^5j^16k^-4 9h^-6j^-4k^-4 Please help-I'm totally lost

    asked by Annie
  271. Math

    3 neighbors are sharing a rectangular strip of land for a garden. They divide the land into 24 equal sized pieces. What fraction of the land does each person get if they share it equally? Write the answer in more than one way.

    asked by Jimmy
  272. communications

    Halfway through the process of drafting a memo, Jacob stops to think about how to word his next paragraph. What part of the writing process does this activity represent?

    asked by tammy
  273. science

    I need a description of a plant cell and its function. Do you know of any web sites that have this. Thanks

    asked by chance
  274. physics

    a marble that is rolling across a lab table has a velocity of 0.7m/s. If the table is 0.9m high, how far from the edge of the table will the ball travel in the horizontel direction before it hits the floor ?

    asked by Anonymous
  275. Biology

    A cell has a salt concentration of 0.2 %. If it is placed into a solution with a salt concentration of 0.1 %. a) What change will occur to the salt concentration inside the cell? b)What change will occur to the water concentration inside the cell? c)What

    asked by Emily
  276. Physical Science

    A weight lifter cleans and jerks 150kg, lifting it 2m above the ground in 1.5s. What is his power output?

    asked by Lo
  277. math

    what is the difference between a solution set and a replacement set

    asked by cheryl
  278. US History

    Last 4 for the day! 19. Most pioneers who settled west of the Appalachians were a. families looking for good land b. miners looking for gold and silver c. missionaries seeking converts d. bankers from New York and Boston A? 20. What message did Protestant

    asked by mysterychicken
  279. 7th grade

    I have a critical thinking problem I need help with...you can divide each side of an equation by the same non zero value. Explain what would result from the equation 4 x 0 = 5 x 0 if you could divide each side by zero and if 0/0 = 1.

    asked by Hailey
  280. social studies

    absolute location of arctic? wat cultures are there in the arctic?

    asked by fdsa
  281. Calculus

    Find the points on the graph of y = (x+1)/ (x+2) where the tangent line is parallel to the line x - y = 2.

    asked by Preston
  282. Calculus

    Find the slope of the tangent line to the curve y = (x^2 -8)^6 at x = 3, and write the equation of the tangent line.

    asked by Preston
  283. science

    what is the charge on an aluminum ion?

    asked by mic
  284. Calculus

    Find the local extrema of the function f(x) = (e^x^2+1)/(2x+1) defined for x > 0, and specify whether they are minima or maxima and give reasons why they are what you claim they are.

    asked by Preston
  285. Math

    I understand how to make Stem-and-Leaf plots,but I don't understand what to count by if my numbers are (from least to greatest) 13,14,16,18,20,32,33,52,58,61,and 67.Please help me!!!

    asked by Bethany
  286. english

    for classification what word goes with know,think?

    asked by suzy
  287. social studys

    how does the united states system differ from england's armed forces?

    asked by destiny
  288. Calculus

    Find f'(x) if f(x) = (ln(x^2+x+1)+2x+3)\ (x^2+1) .

    asked by Preston
  289. Calculus

    Find f'(x) if f(x) = (√x*e^x-x^2)/ (x^2+1)

    asked by Preston
  290. math

    find the value of expression 5+2+6 (8-7)+1 6-(3+1)

    asked by josh
  291. Sci

    Why is it important to be accurate when measuring or recording data????

    asked by Sumaiya
  292. math

    the prison popuation of 9 different countries are: 50, 30, 10, 50, 60, 50, 20, 40, 50. What is the range and standard deviation? Explain. I know the range is 50, but i cant figure out the standard deviation.

    asked by john
  293. Math

    The Lappans buy 3 large sandwich wraps to serve at a picnic. 9 people in all will be at the picnic. Show 3 different ways to cut the sandwiches so that each person gets an equal share.

    asked by Jimmy
  294. Thermochemistry

    When 1 mol of a gas burns at constant pressure, it produces 2426 J of heat and does 6 kJ of work. What is Delta H, q, and w?

    asked by Michelle
  295. Data Management

    Determine the number of ways of selecting four letters, without regard for order, from the word 'parallelogram'

    asked by Brea
  296. math

    my tens digit is 3 more than 5 . my tens digit is double the number of my ones digit . what number am i ?

    asked by nich
  297. algebra

    In a college, some courses contribute more towards an overall GPA than other courses. For example, a science class is worth 4 points; mathematics is worth 3 points; history is worth 2 points; and English is worth 3 points. The values of the grade letters

    asked by john
  298. 5th grade

    what are 4 possible tune-ups to help you keep a postive attitude?

    asked by richard
  299. english

    why is Theodor a hero and why is he so important

    asked by sophie
  300. fun.

    why we are laughing sometime so much?

    asked by manpreet kaur
  301. Physics Help!!

    A laser beam is directed at the Moon, 380,000 km from Earth. The beam diverges at an angle of 6.2×10−5 rad. What diameter spot will it make on the Moon? Express your answer using two significant figures.

    asked by Sam
  302. Trig

    If b=5 , the angle C=50 and the angle A=50 find the other angle B and the remaining sides and . Give your answer to at least 3 decimal places.

    asked by bob
  303. physics

    A 56 cm diameter wheel accelerates uniformly about its center from 130 rpm to 400 rpm in 3.2 s. (a) Determine its angular acceleration. Express your answer using two significant figures. (b) Determine the radial component of the linear acceleration of a

    asked by lauren
  304. Math

    How do you find the area of a semicircle

    asked by Brooke
  305. physics

    A small rubber wheel is used to drive a large pottery wheel, and they are mounted so that their circular edges touch. The small wheel has a radius of 1.7 cm and accelerates at the rate of 6.9 rad/s^2, and it is in contact with the pottery wheel (radius

    asked by rob
  306. Chemistry

    A sample of an unknown gas effuses in 11.1 min. An equal volume of H2 in the same apparatus at the same temperature and pressure effuses in 2.02 min. What is the molar mass of the unknown gas?

    asked by Ashley
  307. algebra

    Will and frank can do a certain job together in 60 minutes. Will can do 3x as much of the job as frank can. in any given amount of time how many minutes would it take will to do the job alone..??

    asked by caitlyn
  308. algebra I

    please check my answer 2/3x-24 less than/equal to 8 = x less than/equal to 12

    asked by Mary
  309. Chemistry

    Could someone please help me complete my lab experiment. Antacid Brand: Life Concentration of HCl: 0.1845 M Concentration of NaOH: 0.1482 M Trial 1: 1.Mass of Table: 1.2173g 2.Volume of HCl added: 75.0 mL 3.Milliomoles of HCl added:mmoles ? Help 4.Volume

    asked by Akhed
  310. 7th grade

    What is the dimension of a rectangle whos perimeter is 42 inches and its area is 104 square inches? Explain.

    asked by Leyley
  311. Ap Chem

    At 200K, the particles of gas X have an average velocity equal to that of Argon at 400K. What is the identity of X? He CO HF HBr F2

    asked by suzan
  312. math

    8y-(2y-3)=9

    asked by tina
  313. Physics C. Mechanics

    A small paint bucket of mas 5.0 kg is attached to a larger bucket of mas 15.0 kg by a light rope of 25 m long. The small bucket is at rest on the ground, and the rope goes up and over a small frictionless pulley and is attached to the larger bucket, which

    asked by Rav
  314. physics

    An 8.00 g bullet is fired into a 160 g block that is initially at rest at the edge of a table of 1.00 m height. The bullet remains in the block, and after the impact the block lands d = 1.6 m from the bottom of the table. Determine the initial speed of the

    asked by A
  315. Chemistry 106

    Calculate number of moles of aluminum in 1.50kg of Al

    asked by Samantha
  316. chemistry

    Calculate the mole fraction of acetic acid in vinegar, assuming that vinegar is 5.00% acetic acid(by mass) and that the density of vinegar is 1.05 g/mL

    asked by Anonymous
  317. AP psychology

    I'm having trouble figuring out this question: Three yr old Marco suffered damage to the speech area of the brain's left hemisphere. Research suggests that a) he will never speak again b) his earlier experiences with speech will enable him to continue

    asked by kathleen
  318. math

    There are 40 people at a picnic, there are 4 more children than adults. How many of each are there? adults? children?

    asked by Anonymous
  319. math

    The endpoints of the diameter of a circle are A(-1,1) and B(0.5,-3). calculate the radius of the circle.

    asked by Ted
  320. physics

    An 8.00 g bullet is fired into a 160 g block that is initially at rest at the edge of a table of 1.00 m height. The bullet remains in the block, and after the impact the block lands d = 1.6 m from the bottom of the table. Determine the initial speed of the

    asked by A
  321. Math

    I need to graph this equation y=(3/2)sin(3x+2ð)-3. What would the primary interval be for this problem and how would it appear on a graph?

    asked by Annie
  322. Physics

    A weight lifter cleans and jerks 150kg, lifting it 2m above the ground in 1.5s. What is his power output? How do you set this problem up i know the units?

    asked by Lorin
  323. Math

    Simplify. (5x-1)/(x-1) My textbook says it can't be simplified any further. But can't it be simplified to 5?

    asked by John
  324. Algebra 1

    S = n/2(A+t) solve for A I don't undersand what to do with all these variables.

    asked by Sarah
  325. History

    One of the ironies of World War I was that in a war to make the world safe for democracy, government attacked the civil liberties that make democracy possible.

    asked by Connie
  326. Chemistry

    How many carbon atoms are contained in 2.8g of C2H4?

    asked by Quincy
  327. Physics

    A copper calorimeter can with mass .100 kg contains .160 kg of water and .018 kg of ice in thermal equilibrium at atmospheric pressure. If .750 kg of lead at a temperature of 255 degrees Celsius is dropped into the can what is the final temperature of the

    asked by Katherine
  328. english

    Please help me pick out the adjectives in this paragraph. In the first two stanzas, Mr. Lowell emphasized the wealth of the dandelion by using several phrases suggesting riches, such as "harmless gold," "buccaneers," and "Eldorado." In the third stanza,

    asked by Shelly
  329. social studies

    what cultural impact did the aryan migrations have on india?

    asked by meg
  330. Algeblease check my answer

    Posted by Annie on Monday, October 18, 2010 at 7:20pm. Choose the equivalent expression(3h^-2j^3k)^2(hj^-5k^3)^-2 The signs that look like minuses are negative signs Answers: 3h^-6j^16K^-4 9h^-2j^5j^16k^-4 9h^-6j^-4k^-4 9h^-6j^-4k^-4 Please help I'm so

    asked by Annie
  331. physics

    a stationary car with a mass of 1500 kg reaches a velocity of 15 m/s 5 seconds after starting, what is the car's acceleration

    asked by Joe Darp
  332. Stress

    Think of a stressful time in your life. How did you deal with the stress. Right down a thoughtful answer. The most stressful time in my life came about when my great grandmother died. I was shattered completely after hearing that news, and so was my

    asked by Sara
  333. Math

    My worksheet title reads "Modeling 3-Digit Addition Practice" and then it has the problem 186+245 and then it has a table with four colummns and 3 rows the first column title reads "Base-Ten Drawings" the second one reads "Record the Problem" and the third

    asked by Dora
  334. math

    Thank you - Ms Sue ( math )

    asked by Anonymous
  335. Physics

    A 10 kg box is pulled across the floor at a constant velocity of 3.0m/s. If the box is pulled with a force of 40 N, what's the size of the frictional force between the box and the floor?

    asked by Diana
  336. math

    one endpoint of a line segment has coordinates(-3,-1). The midpoint of the line segmaent is at (1,1), what is the location of the other end point?

    asked by Ted
  337. Algebra

    f(x) = (x+2)/(x-6) what is the domain of f? How would I find this? without graphing

    asked by Amy
  338. Chem 2068 lab

    Once I have the molarity for KHP which is 0.0027 M, and i add 14.48 mL of NaOH to the solution, what is the concentration of NaOH in the solution.

    asked by Car
  339. math

    There are 46 more cars than trucks in a parking lot. There were 29 trucks. Write an expression that shows how many cars were in the parking lot.

    asked by Anonymous
  340. english

    Can I please, please get some websites that will show me the local government structure of dekalb county (atlanta, georgia), and, political issues concerning dekalb county. This is stuff I need for my paper, I've been searching google all day, but nothing

    asked by y912
  341. physics

    A 0.37 kg piece of putty is dropped from a height of 3.0 m above a flat surface. When it hits the surface, the putty comes to rest in 0.25 s. What is the average force exerted on the putty by the surface? magnitude N direction

    asked by jibin
  342. US History

    What actions did FDR chose to mobilize the nation for war? What new social and economic choices did American face as the nation became the “arsenal for democracy? What new opportunities and old constraints did woman and minorities encounter on the home

    asked by Connie
  343. English

    Please check and see if I answered correctly. Have to identify the verb and tell if intransitive or transitive 1. In China people eat the tender shoots as a vegetable. 2. The Japanese also make flutes from the stems. 3. In some countries, bamboo cages hold

    asked by Stephanie
  344. Stress

    How can having Visual/Spatial Intelligence make you deal with stress better?

    asked by Sara
  345. english

    By adding sentence variety in writing you can give it life and rhythm. Your readers can be bored by reading too many sentences with the same structure and length. It can grow to be monotonous for readers.

    asked by jessica
  346. physics

    If the jet is moving at a speed of 1500 km/h at the lowest point of the loop, determine the minimum radius of the circle so that the centripetal acceleration at the lowest point does not exceed 6.0 g's.

    asked by Anonymous
  347. english

    Define sentence variety and rhythm in your own words and explain how they interact in effective writing

    asked by jessica
  348. Math

    Sam makes 6.50 per hour. What percent of increase would Sam need to be paid exactly $6.65 per hour?

    asked by Alexis Ancelet
  349. Biology

    Describe the structure of the interior surface of the small intestine and explain how this structure relates to its function.

    asked by Michael
  350. Chemistry

    what is the wavelength of the photon emitted when an electron drops from a 4p orbital to a 2p orbital in a hydrogen atom

    asked by Emily
  351. physics

    A jet pilot takes his aircraft in a vertical loop.f the jet is moving at a speed of 1500 km/h at the lowest point of the loop, determine the minimum radius of the circle so that the centripetal acceleration at the lowest point does not exceed 6.0 g's.

    asked by Anonymous
  352. phys

    A 5g bullet is fired from a 5000g gun. If the bullet leaves the gun going +800m/s, with what speed does the gun recoil?

    asked by gg
  353. Stress

    In a sentence or two, describe each of your own top three stressors. 1. Time. ~ I get a lot of homework and I try to use my time well to finish it all, but with distractions in the way it's not possible. 2. Health. ~ I am very conscious about my health, so

    asked by Sara
  354. To Ms. Sue

    Ms. Sue could you please take a look at my stress questions, thanks a lot.

    asked by Sara
  355. Math

    Given f(x)=7-2(x-1)^2, x>= 1, determine f inverse (5).

    asked by Emily
  356. math

    write an expression.there were22 students in the clsass but some were absent

    asked by JOSH
  357. algebra

    CAN YOU PLEASE EVALUATE THE EXPRESSION TO 4 DECIMAL PLACES 10-SQ ROOT OF 18 DIVIDED BY 11

    asked by ABBS
  358. English

    My last two that are confusing me. Identify verb and tell if transitive or intransitive. 1) Most people think of bamboo as a tree or a bush. 2) Bamboo belongs to the grass family. 1) think=intransitive 2) belongs=intransitive

    asked by Stephanie
  359. math

    gcf of 3 numbers are 9, sum is 90, what are the numbers?

    asked by John
  360. Chemistry

    Sorry DrBob22, I wasn't sure if you saw my last post. But, I am still a little confused. Here's the info: Antacid Brand: Life Concentration of HCl: 0.1845 M Concentration of NaOH: 0.1482 M Trial 1: 1.Mass of Table: 1.2173g 2.Volume of HCl added: 75.0 mL

    asked by Akhed-To DrBob222
  361. physics

    A 120 N child is in a swing that is attached to ropes 2.20 m long. Find the gravitational potential energy of the child-Earth system relative to the child's lowest position at the following times. (a) when the ropes are horizontal (b) when the ropes make a

    asked by Katie
  362. spanish

    What subject form would you use for mis amigos? Ex: usted, nosotros, ellos...?

    asked by Gretchen
  363. english

    what issues does the scene raise? act.3.sc.4. lines 1-150 in the book twelfth night by shakespeare

    asked by jennifer
  364. Math

    Given f(x)=2x^2-1, determine the equation of the inverse.

    asked by Emily
  365. To Emma

    You've been banned from posting on Jiskha for a couple of days. Twice you posted questions with my name in the Name box. Do not try to impersonate anyone else on this forum.

    asked by Ms. Sue
  366. chem

    vinegar is 5.0% acetic acid, CH3COOH, by mass. vinegar has a density of 1.02 g/ml what is the madd of acetic acid in 50.0 ml of vinegar?

    asked by Anonymous
  367. math

    In his pocket, a boy has 3 red marbles, 4 blue marbles, and 4 green marbles. How many will he have to take out of his pocket to ensure that he has taken out at least one of each color?

    asked by john
  368. austin

    seth has three times as many stickers as evan. together they have 52 stickers. how many stickers does each person have?

    asked by trisha
  369. Physics

    Assume cathy has to drag her suitcase along the floor of the airport terminal by a rope. The rope makes a 40.0 degree angle with the horizantal. The suitcase has a mass of 36.0 kg and Cathy pulls on the rope with a force of 65.0 N. a) What is the magnitude

    asked by Lisa
  370. 5 th grade math

    In the first year of production a play sells 1,572 tickets, in the second year it sells 1,753 tickets, in its third year it sells 152 less than in its second year. How many tickets are sold in 3 years? please! help me with this problem. thank you

    asked by pat
  371. math

    if t is 30% of u and u is 60% of v, what is the percent of v is t?

    asked by Taylor
  372. science

    when lithium hydroxide pellets are added to a solution of sulfuric acid, lithium sulfate solution and water are formed

    asked by hailey
  373. math

    how do you solve 0.32/8.64=

    asked by jOSH
  374. NEED HELP POSTED TWICE

    1. Find the slope of the line through the pair of points. (-1/3,0) and (-1/2,-1/2) Choices: -3 1/3 -1/3 3 2. Write in standard form an equation of the line passing through the given point with the given slope. Slope=8/7; (5,-3) Choices: -8/7x+y=-61/7

    asked by Jacob
  375. math

    A radius of a circle has end points at O(-1,3) and R(2,2). find two possible end points for the diameter that contains this radius. describe any assumptions you make.

    asked by Ted
  376. precalc

    (3x)^2/(27^x2)=1 I have to find the solution

    asked by pauly
  377. AP U.S. History

    Between 1763 and 1789, the use and control of the frontier regions presented problems to both the British and the Americans. Describe the problems involved in the use and control of the frontier and explain how both the British and the Americans attempted

    asked by Amanda
  378. calc

    (e^7x)/(e^3)^x= e^16

    asked by pauly
  379. calc

    (e^x)e^x+1)/(e^x-1)=8

    asked by Vinny
  380. math

    A radius of a circle has end points at O(-1,3) and R(2,2). find two possible end points for the diameter that contains this radius. describe any assumptions you make.

    asked by Ted
  381. Science

    what would be the approximate volume of a: teaspoon of syrup? regular soft drink?

    asked by Pratigya
  382. Science

    what is the mass of one millilitre of water?

    asked by Pratigya
  383. Math

    Given f(x)=7-2(x-1)^2, x>= 1, determine f inverse (5).

    asked by Emily
  384. precalc

    log3 2 +log3 X +log3 (2x-3)=log3 X + log3 (x+1) + log3 (x-1) - log3 (x^2-1)

    asked by sarah
  385. computer

    Think about how computer technology permeates society. Throughout the day, you encounter many types of computerized devices at the grocery store, fast food chains, school, and work. Describe one such device available today: Who uses it, what are they able

    asked by Rosalind
  386. physics

    1.If a mass is 15 cm from the axis of rotation and makes 25 revolutions in 10 seconds, what is its speed in m/s? 2.If m = 0.1 kg and the values above still hold, what is the numerical values of the centripetal force?

    asked by Derek
  387. pre calc

    (4^x2)^2 mulipled by 1/(4^5x)=64

    asked by sarah
  388. Science

    A revolutionary war cannon, with a mass of 2170 kg, fires a 18.1 kg ball horizontally. The cannonball has a speed of 146 m/s after it has left the barrel. The cannon carriage is on a flat platform and is free to roll horizontally. What is the speed of the

    asked by Cole
  389. Trig

    Find the general solution for the equation 4tanx+cotx=5?????? and the steps please? THANYOO!

    asked by Valerie
  390. math

    explain who you could show five less than a number using an expression

    asked by lena
  391. Chemistry

    Sorry DrBob, it's me again! Here's the info: Antacid Brand: Life Concentration of HCl: 0.1845 M Concentration of NaOH: 0.1482 M Trial 1: 1.Mass of Table: 1.2173g 2.Volume of HCl added: 75.0 mL 3.Milliomoles of HCl added:(0.1845M x 75.0mL= 13.84 mmoles

    asked by Akhed-To DrBob222
  392. algebra

    explain how you could show five less than a number using an expression

    asked by lena
  393. chemistry

    I am completing a lab where I had to determine the mass percent of Mg(OH)2 in an antacid tablet , and I am trying to determine sources of error for my lab. I was wondering if when I back-titrated with NaOH after I overshot on purpose would the added OH-

    asked by Peter
  394. Chemistry

    calculate cell potential at 25C for: 3Fe3+(aq) + AL(s)= 3Fe2+(aq)+ Al3+ (aq) if Fe3+ = 0.300 M, Fe2+ = 0.150M Al3+ = 0.300M. The standard reduction potentials are as follows: Fe3+ (aq) + e- = Fe2+ (aq) Al3+ (aq) + 3e-=Al (s) Eo = +0.771 V Eo = -1.66 V

    asked by Helen
  395. geometry

    Find each measure using the given measures of triangleXYZ. Round angle measures to the nearest degree and side measures to the nearest tenth. Find measure of angle Y if y= 7,z=11,and the measure of angle Z=37.

    asked by tracy
  396. Biochem

    When trying to purify a protein using column chromatography, what happens to the mass of the protein eluted from the column if you accidentally run it dry? Would it be more or less? Thanks.

    asked by Nancy
  397. Chemistry

    A volume of 25.0 ml of 0.100 M CH3C02H is titrated with 0.100 M NaOH. What is pH after the addition of 12.5 ml of NaOH? (Ka for CH3CO2H = 1.8x10-5)

    asked by Helen
  398. Trig

    Solve for 0≤x≤2π ---> (2√2)cos²(x)-(√2-2)cos(x)-1=0 much thanks .

    asked by mickey
  399. Physics

    A car starts from rest and accelerates at a constant rate of 1.1 m/s2. If the radius of the car wheels is 29 cm, and the final angular speed of the car wheel is 48 rad/s, how far does the car travel

    asked by Sufian Syed
  400. Organic Chemistry

    Assume that a round bottom flask holds 100 mL and the distilling head has an internal volume of 12 mL in the vertical section. At the end of a distillation, vapor would fill this volume, but it could not be forced through the system. No liquid would remain

    asked by Omama
  401. precalc

    find where f(x)0 f(x)=xlnx-2x

    asked by emily