Questions Asked on
March 1, 2012

  1. Trig FInd Translation Rule and Coordinates Thanks!

    The vertices of a rectangle are R(–5, –5), S(–1, –5), T(–1, 1), and U(–5, 1). After translation, R' is the point (–11, –11). Find the translation rule and coordinates of U'. (x, y)--> (x – 6, y + 6); (–11, 7) (x, y)--> (x – 6, y –

    asked by LeXi ;)
  2. CHEMISTRY!!!=0

    Determine pH of each solution: b) 0.20 M CH3NH3I I did.... CH3NH3^+ +H2O -> CH3NH2 + H3O^+ 0.20 ---------------0--------------0 0.20-x--------------x------------x so i got... ? =x^2/0.20-x i looked up in the back of the book and found the Kb of CH3NH2 to

    asked by ALISON
  3. physics

    A 65.0-kg runner has a speed of 5.20 m/s at one instant during a long-distance event. (a) what is the runner's kinetic energy at this instant? (b) if he doubles his speed to reach the finish line, by what factor does his kinetic energy change

    asked by corey
  4. ap chemistry

    what volume of 0.0100 M NaOH must be added to 1.00 L of 0.0500 M HOCl to acheive a PH of 8.00?

    asked by jenna
  5. PHYSICS HELP!!!!!!!

    You walk 50 m to the north, then turn 60° to your right and walk another 45 m. How far are you from where you originally started?

    asked by SAMI
  6. History-The Early Greeks

    How did early Greek civilizations use their natural surroundings to prosper and grow?

    asked by Zoey
  7. Business Finance

    Assume a bank loan requires a interest payment of $85 per year and a principal payment of $1,000 at the end of the loan's eight-year life. a) How much could this loan be sold for to another bank if loans of similar quality carried a 8.5 percent interest

    asked by Karla
  8. chem

    At standard pressure, ammonia melts at 195 K and boils at 240 K. If a sample of ammonia at standard pressure is cooled from 200 K down to absolute zero, what physical constants are needed to calculate the change in enhtalpy? I) the heat capacity of

    asked by please help !
  9. AP CHEMISTRY

    Calculate the pH at the equivalence point in titrating 0.100 M solutions of each of the following with 0.080 M NaOH. A) benzoic acid (C6H5COOH) Ka= 6.3*10^-5 for it

    asked by DAN
  10. chemistry

    How much heat is required to heat 0.1 g of ice at −30 C to steam at 100 C? Use the approximate values below for your calculation. cice = 2 J/g · C csteam = 2 J/g · C cwater = 4 J/g · C Hvap = 2, 260 J/g Hfus = 340 J/g

    asked by please help !
  11. Maths

    How do you draw an angle ABC , with A=35, AC=6cm and C=65?

    asked by Laquela
  12. trig

    Which expression is equivalent to cos(4x) + cos(2x)?

    asked by Anonymous
  13. Contract Law

    1. Herb Appleseed had a contract with Abrams Stores to deliver one thousand boxes of candied fruit for a St. Valentine’s Day sale. He was the deliver the fruit by 1:00PM on Friday, the 4th of February. He drove up to the Abrams store at 1:00PM and found

    asked by Michelle White
  14. chem

    is a solution containing 35g of NaCl per 100g of water at 25 degrees Celsius, saturated, unsaturated, or supersaturated

    asked by nakisha
  15. CHEMISTRY!!!=0

    Determine the pH of each solution: (a) 0.10 M NH4Cl can someone show me how to do this one so i have the idea of how to do the rest. thanks!

    asked by ALISON
  16. American Gov't--please check

    Which third party is an example of an economic protest party? 1.)The Green Party 2.)The Populist Party 3.)The Independent Party My answer3.)The Free Soil Party

    asked by Mackenzie
  17. chemistry

    if the average salinity is 35 parts per thousand how many grams of dissolved salts will 500g of seawater contain

    asked by jada
  18. Operations management

    Tax Preparers Inc. works 250 days per year. The company uses adding machine tape at a rate of eight rolls per day. Usage is believed to be normally distributed with a standard deviation of three rolls during lead time. The cost of ordering the tape is $10

    asked by Patrice
  19. electrical

    6.A resistor R1 dissipates power P when connected to a certain generator with voltage V. If a resistance R2 is put in series with R1 the power dissipation by R1 A) Decreases B) Increases C) Remains the same D) Any of the above depending upon the value of

    asked by Anonymous
  20. 11Biology

    What are the gametes formed by the following squash plants, the genotypes of which for fruit colour and shape given; and what will be the appearance of the offspring from each cross? WWdd x wwDD WwDD x wwdd WwDd x WwDD WwDd x Wwdd WwDd x wwdd WwDd x WwDd

    asked by Rebecca
  21. Math mrs sue

    Can you check these? 18% of 90 is what number? i got 16.2 what number is 41% of 800? i got: 1951.22 what number 5% of 522? i got : 10440 70% of 279 is what number? i got: 195.3 what number is 90% of 13? i got : 14.44 9% of 351 is what number? i got: 32 36%

    asked by Marko
  22. Chem Question (thermo)

    Calculate ΔG at 25 ºC for a reaction in which Ca2+(aq) combines with CO32–(aq) to form a precipitate of CaCO3(s) if the concentrations of Ca2+(aq) and CO32–(aq) are 0.023 M and 0.13 M, respectively. (ΔGº = –47.94 kJ) A. –62.3 kJ/mol B. –33.5

    asked by M
  23. Math

    mariah bought a rectangular piece of land that was 3 miles long and 2 miles wide.She plans to divide into 2 sections of equal area. if she farms one of the sections how many square miles could be farmed?

    asked by Bobby
  24. History-The Early Greeks

    Name three rights granted to Greek citizens that American citizens have today.

    asked by Zoey
  25. ap

    in an AP, if the 5th and 12th terms are 30 and 65 respectively. what is the sum of first 20terms

    asked by Anonymous
  26. Chemistry-Stoichiometry

    A 1.146g mixture of the solid salts NaS)4 and PB(NO3)2 forms an aqueous solution with the precipitation of PbSO4. How would I write the molecular form of the equation for the reaction?

    asked by Edward
  27. physics

    Two forces are applied to a car in an effort to move it, as shown in the following figure, where F1 = 428 N and F2 = 358 N. (Assume up and to the right as positive directions.) a) What is the resultant of these two forces? magnitude and direction b) If the

    asked by jill
  28. physics

    A balloon rubbed against denim gains a charge of -9 µC. What is the electric force between the balloon and the denim when the two are separated by a distance of 5 cm.

    asked by anne
  29. english

    Why don’t the narrator and the other man want to hold Edward for ransom? Is their motivation internal or external?

    asked by Shaquita Brown
  30. Geography

    What are factors leading to growth in lagos: Geographical Economic Political

    asked by Lily
  31. math

    find the value of x. round to the nearest tenth. when the the inside is 35 degrees and the other angle is 90 the outside hypotenuse is 20 and x

    asked by miguel
  32. chemistry

    Calculate the standard reduction potential for the reaction of Cu(III) to Cu(II) Use the following data: 1) Cu^+3 + 2e^- -> Cu^+, E°1 = 1.28 V 2) Cu^+2 + e^- -> Cu^+, E°2 = 0.15 V 3) Cu^+2 + 2e^- -> Cu(s), E°3 = 0.34 V 4) Cu^+ + e^- -> Cu(s), E°4 =

    asked by Katie
  33. math percents

    Can you check these? 18% of 90 is what number? i got 16.2 what number is 41% of 800? i got: 1951.22 what number 5% of 522? i got : 10440 70% of 279 is what number? i got: 195.3 what number is 90% of 13? i got : 14.44 9% of 351 is what number? i got: 32 36%

    asked by marko
  34. math

    A rocket shoots straight up from the launch pad.Five seconds after lift off, an observer 2 miles away notes that the rocket's angle of elevation is 41 degrees.How far did the rocket rise during those 4 seconds?

    asked by jeny
  35. math

    Describe how to find linear expressions for the possible dimensions of a rectangular prism with a volume of 8k(cubed) + 26K(squared) +6K.

    asked by Jane
  36. math

    Estimation:A creek runs along a distance of 16,300 feet. About how many miles long is the creek?

    asked by shion
  37. Calculus-concave up and down

    Can someone explain this question to me? What intervals should I use to test whether or not the graph is concave up or down. Here is the URL for the graph. imgur dotcom/FdQCV

    asked by Melinda
  38. chem

    How much heat is required to heat 0.1 g of ice at −30 C to steam at 100 C? Use the approximate values below for your calculation. cice = 2 J/g · C csteam = 2 J/g · C cwater = 4 J/g · C Hvap = 2, 260 J/g Hfus = 340 J/g

    asked by please help !
  39. geometry

    chung ho is standing on the top of a building that is 135m tall. The angle of depression to the top of the building next door is 71 degrees. The angle to the base of the building is 77 degrees. The buildings are 31m apart. How tall is the other building?

    asked by Math
  40. chemistry

    Current is applied to an aqueous solution of lithium sulfide. What is the cathode and what is the anode?

    asked by Katie
  41. Chemistry

    The following reaction exhibits the rate law: Rate = k[NO2]^2[Cl2]. 2NO(g)+Cl2(g)---->2NOCl (g) (a) Explain why the following mechanism is not plausible for this reaction. Fast: NO + Cl2NOCl + Cl Slow: NO + Cl---->NOCl (b) Propose a two-step mechanism

    asked by James
  42. chemistry

    Which of the molecules can form a hydrogen bond with a water molecule? 1. CH3OH 2. CH2=CHCH3 3. CH3CH2SH 4. CH3OCH3

    asked by krystal
  43. Math

    There are 24 students in Mrs.Smith's 1st block class. 1/4 of the class passed the math test with an A. 12 students in the class passed the math test with a B. What percent of the students in the class passed the test? ****** This is how I slove the

    asked by Grace
  44. statistics

    When someone buys a ticket for an airline flight there is a 0.0995 probability that the person will not show up for the flight (based on data from the IBM research paper by Lawrence, Hong, and Cherrier). An agent for Air America want to book 24 persons on

    asked by meagan
  45. Math

    Point B is 10 KM north of Point A and Point C is 10 Km from B on a bearing of 060 from b. Find the bearing and distance of C from A 

    asked by Sanjay
  46. chemistry

    How many calories must be supplied to 59 g of ice at −6 C to melt it and raise the temperature of the water to 61 C? The specific heat of ice is 0.49 kcal/kg · K and of water is 1 kcal/kg · K; the heat of fusion of water is 79.7 kcal/kg, and its heat

    asked by anonymous
  47. physics please help :/

    A 0.50-kg block, starting at rest, slides down a 30.0° incline with kinetic friction coefficient 0.30 (the figure below). After sliding 84 cm down the incline, it slides across a frictionless horizontal surface and encounters a spring (k = 33 N/m). (a)

    asked by Angel
  48. History-The Early Greeks

    Why did the use of money help trade grow?

    asked by Zoey
  49. Physics

    A block rests on a horizontal, frictionless surface. A string is attached to the block, and is pulled with a force of 45.0 N at an angle è above the horizontal, as shown in Figure 7-23. After the block is pulled through a distance of 1.50 m its speed is v

    asked by Anna
  50. Calculus

    Please help this is due tomorrow and I don't know how to Ive missed a lot of school sick Consider the curve given by the equation x^3+3xy^2+y^3=1 a.Find dy/dx b. Write an equation for the tangent line to the curve when x = 0. c. Write an equation for the

    asked by Jessica Chaney
  51. Chemistry

    Fluorine reacts with oxygen to yield oxygen difluoride. 2 F2(g) + O2(g) 2 OF2(g) What is the value of K if the following concentrations are found at equilibrium: [O2]= 0.200 mol/L, [F2]=0.0100 mol/L, and [OF2]=0.0633 mol/L

    asked by Sally
  52. arithmetic

    in an AP, if the 5th and 12th terms are 30 and 65 respectively. what is the sum of first 20terms

    asked by Anonymous
  53. Physics

    Workers have loaded a delivery truck in such a way that its center of gravity is only slightly forward of the rear axle, as shown in the drawing. The mass of the truck and its contents is 6675 kg. Find the magnitudes of the forces exerted by the ground on

    asked by Bria
  54. chemistry

    Which has the higher boiling point? (a) CH3CH2CH2CH2CH3 or (b) CH3CH2CH2CH2CH2CH2CH2CH3

    asked by krystal
  55. algebra

    a bag contains only nickels and dimes. there are exactly 18 coins in the bag. the amount of money in the bag is $1.25. let x represent the number of nickels in the bag. let y represent the number of dimes in the bag. 1. write a system of equations that

    asked by kelly
  56. Language Arts EnglishIII

    Identify the pronoun in the sentence below. Also identify the class and noun function of the pronoun using the abbreviations from the chart. For intensive pronouns, put NONE for noun function. Due to the large storm approaching, three students, Jamie,

    asked by Becca
  57. calculus

    Given y^4 -x^4=16 find and simplify d2y/dx2 using implicit differentiation. I got the first derivative which was x^3/y^3 and no im am stuck on using implicit differentiation for the second derivative part

    asked by Anonymous
  58. math

    A radio station has 170 tickets to a concert. They gave away 4 times as many tickets to listeners as to employees?

    asked by Michelle
  59. physics

    Two electrostatic point charges of 83 µC and 50 µC exert a repulsive force on each other of 175 N. What is the distance between the two charges?

    asked by anne
  60. chem

    How much heat is required to heat 0.1 g of ice at −30 degrees C to steam at 100 degrees C

    asked by sammy
  61. History-The Early Greeks

    Why did the use of money help trade to grow?

    asked by Zoey
  62. Algebra 2

    If there are initially 1500 bacteria in a culture, and the number of bacteria double each hour, the number of bacteria after t hours can be found using the formula N=1500(2^t). How many bacteria will present after 7 hours? I think the answer is N=192,000.

    asked by Emily
  63. algebra

    you are planning a cookout. you figure that you will need at least 5 packages of hot dogs and hamburgers in total. a package of hot hods costs $1.90 and a package of hamburgers costs $5.20. you can spend a maximum of $20 in total on the hot dogs and

    asked by kelly
  64. Math

    Mattie drove 140 miles in the same amount of time that it took a tubropropeller plane to travel 520 miles. The speed of the plane was 190 mph faster than the speed of the car. Find the speed of the plane

    asked by Anonymous
  65. Ff

    The coefficient of static friction between the m = 3.50 kg crate and the 35.0° incline of Figure P4.41 is 0.340. What minimum force must be applied to the crate perpendicular to the incline to prevent the crate from sliding down the incline? Your response

    asked by Avery
  66. Physics

    Pendulum A is 20 cm long and has a 5 g mass on it. Pendulum B is 30 cm long and has a 10 g mass on it. Which one has a faster period?

    asked by Amber
  67. math

    how can you estimate heights and distances you can't easily measure with rulers or tape measures by using the following methods? a) shadows and similar triangles b) mirrors and similar triangles c) small triangles nested within larger triangles. (it's not

    asked by Dee -Ann
  68. Decimal division

    If you were going to solve 0.7 divided by 0.0035 what would you write down on paper step by step?

    asked by Kenneth
  69. math

    there were 490 altogether in 2 groups. group A consited of only boys and group b constied of only girls. ther were 2 and a half times as many girls as boys. some girls joined group b and foe every 4 boys in group a 32 more boys jioned the group. the total

    asked by t
  70. physics

    Imagine you are sitting in a car tossing a ball straight up into the air. a) If the car is moving at constant velocity will the ball land in front of, behind, or in your hand? b) If the car rounds a curve at constant sped where will the ball land?

    asked by annoymus
  71. Physics

    A jet of water squirts out horizontally from a hole near the bottom of the tank, Assume that y = 1.19 m and x = 0.544 m. What is the speed of the water coming out of the hole?

    asked by Jackie
  72. algebra

    A cylindrical oil tank is 2/5 full. If 9 more liters are added, the tank will be 5/8 full. What is the capacity of the tank?

    asked by Gloria
  73. math

    A radio station had 170 tickets to a concert. They gave away 4 times as many tickets to listeners as to employees. How many tickets did they give away to employees?

    asked by Michelle
  74. math

    Solve the system x^2+y^2-4x+2y=20 4x +3y =5

    asked by Kyle
  75. Math

    Three students will represent your school at a conference at the state capitol. A drawing will be held to select the three representatives from a group of five finalists. If you and you friend are both finalists, what are the chances that both of your

    asked by Anonymous
  76. arithmetic

    an ap consists of 21 terms.the sum of 3terms in the middle is 129 and of the last three is 237 find the AP.

    asked by Anonymous
  77. math

    a paper towel roll is shaped like a cylinder. it is 4cm wide and 28 cm tall. find its volume to the nearest tenth. use 3.14 for pi

    asked by tdog
  78. circles

    OPQR is a rhombus , three of whose vertices lie on a circle with centre O.If the area of the rhombus is 32 root 3cm square ,find the radius of the circle.

    asked by Anonymous
  79. PHYSICS

    A highway curve with a radius of 750 m is banked properly for a car traveling 150 km/h. If a 1560- kg Porshe 928S rounds the curve at 240 km/h, how much sideways force must the tires exert against the road if the car does not skid?

    asked by Steve
  80. Psychological Statistics

    A researcher predicts that watching a film on institutionalization will change students’ attitudes about chronically mentally ill patients. The researcher randomly selects a class of 36 students, shows them the film, and gives them a questionnaire about

    asked by Patience
  81. Physics

    A block rests on a horizontal, frictionless surface. A string is attached to the block, and is pulled with a force of 45.0 N at an angle è above the horizontal, as shown in Figure 7-23. After the block is pulled through a distance of 1.50 m its speed is v

    asked by Anna
  82. AP CHEMISTRY

    how did u get .0444 in the question i just asked

    asked by 2 DrBob222 from DAN
  83. help help helppppp pleasee

    ý posted some question of physics... please any one answer me.... qyestions are bellow ý posted before 3 hours...

    asked by ADRÝAANA
  84. Can' t Figure Out: Math

    The art department had a party at the teacher's house. There are 50 brownies and 40 celery sticks served as refreshments. Each art student had the same number of brownies and the same number of whole celery sticks, & nothing was left over. The art teacher

    asked by Pam J.
  85. Chemistry

    Each of the following processes is spontaneous as described. Which one will have ∆H approximately equal to zero? 1. precipitating 1 mol of AgBr(s) from a solution of Ag+(aq) and Br−(aq) 2. 1 L He(1 atm, 298 K) + 1 L Ar(1 atm, 298 K) → 2 L He/Ar

    asked by Mary
  86. Math

    a chemist has an 18% acid solution and a 36% acid solution. How many liters of each of these solutions should be mixed together to make 24L of 30% solution? Enter two numbers separated by a comma

    asked by Nancy
  87. physics

    On an aerial photograph of a triangular piece of land the lengths of the three sides are 4cm, 5cm and 7cm. If the shortest side of the actual piece of land is 360 meters, find the lengths of the other sides

    asked by Anonymous
  88. math please

    What is the value of the output for the function, g(c) = 19 - c2, if the input is 4?

    asked by BritBoss
  89. English

    Writeacher, I urgently need you to check these sentences. Thank you. I need you to check if the instructions are correct. 1. Complete the sentences with the correct form of the verb in brackets. 2. Turn the sentences into the passive. Mention the agent

    asked by Henry
  90. PHYSÝCS I

    A mass m1 = 18.7 kg on a frictionless ramp is attached to a light string. The string passes over a frictionless pulley and is attached to a hanging mass m2. The ramp is at an angle of θ = 23.7° above the horizontal. m1 moves up the ramp uniformly (at

    asked by ADRÝAANA
  91. chemistry

    At standard pressure, ammonia melts at 195 K and boils at 240 K. If a sample of ammonia at standard pressure is cooled from 200 K down to absolute zero, what physical constants are needed to calculate the change in enhtalpy? I) the heat capacity of

    asked by please help !
  92. Chemistry

    A block of copper at 100 degrees Celsius comes in contact with a block of aluminum at 20 degrees Celsius. The final temp of the blocks is 60 degrees Celsius. What are the relative masses of the blocks?

    asked by Sue
  93. chemistry

    how many moles of NaCl are contained in 1.9L of a 1.7M NaCl solution

    asked by nakisha
  94. chemistry

    A certain substance has a molar heat of vaporization of 54.2 kJ/mol. How much of the substance is in a sample that requires 80.0 kJ to vaporize? Answer in units of mol

    asked by anonymous
  95. college implicit HELP!

    I WANNA KNOW I'M DOING RIGHT. Find the slope of the tangent line to the curve √(3x+2y) + √(4xy)=11.6 at the point (6,4). THAT WHAT I DID: (3x+2y)^1/2+(4xy)1/2=11.6 next step: 1/2(3x+2y)^-1/2*y'+1/2(4xy)*y=0 y'= -(3x+2y)/(4xy) right?

    asked by josephine
  96. Calculus. I need help!

    i don't know which one is match. i tried those problem. i couldn't solve it Find y' by implicit differentiation. Match the expressions defining y implicitly with the letters labeling the expressions for y'. 1. 7xsiny+2cos2y=2cosy 2. 7xcosy+2sin2y=2siny a.

    asked by LISA
  97. algebra

    find each probability if you pick a card, do not replace it, then pick a second 3 white cards 5 black cards and you pick black, then white

    asked by kelly
  98. PHYSICS ARGENT!!!

    Determine the scalar product of A= 3.0i + 1.0j - 2.0k and B= 3.0i - 2.0j - 3.0k

    asked by SAMI
  99. chemistry

    Indicate the number of covalent bonds that each nonmetal atom is expected to form. a. Se is expected to form 2 covalent bonds. b. H is expected to form 1 covalent bonds. c. Br is expected to form 1 covalent bonds. d. N is expected to form 3 covalent bonds.

    asked by krystal
  100. physics

    The density of helium is 0.179kgm3.A Baloon hs a capacity of 27m3 and a mas of 12.5kg whn empty.a)fnd the total mas of baloon n gas.b)if dnsity of air is 1.29 kgm3 wht mas of air is displacd by the baloon

    asked by Luc
  101. PHYSÝCS I

    A block of mass m1 = 21.3 kg is at rest on a plane inclined by θ = 30.00 degrees. It is connected via a rope and pulley system to another mass m2 = 24.5 kg, as shown. The coefficients of static and kinetic friction between block 1 and the inclined plane

    asked by ADRÝAANA
  102. Physics

    An electron moves with speed 2.46 x 105 m/s in a 1.39-T uniform magnetic field. At one instant, the electron is moving due west and experiences an upward magnetic force of 2.81 x 10−14 N. Caculate the magnetic field (angle). What is the direction of the

    asked by Ashley
  103. math

    To get 8, what operations (+ - x / sqrt) do I use between a series of four 3s (3_3_3_3=8)?

    asked by Emerson
  104. geometry

    a school playground is in the shape of a rectangle 500 feet long and a 100 feet wide if fencing cost 15 dollars per yard what will the cost be to place fencing around the playground ?

    asked by ash
  105. arithmetic

    an ap consists of 21 terms.the sum of 3terms in the middle is 129 and of the last three is 237 find the AP.

    asked by Anonymous
  106. American Government

    Name two of the many influential minor parties (also called third parties).

    asked by Mackenzie
  107. physics

    Jessica, who mass is 55 kg, is 3.50 meters away from a 0.20 kg bag of Fig Newtons. What is the gravitational force between Jessica and the cookies?

    asked by becky
  108. math

    The equation y = 400(1.03)x is an example of

    asked by katrina
  109. physics

    What is the volume of a metal which weighs 28g less in kerosene and the densty is 800 kgm3 than it does in air

    asked by Luc
  110. HELP!!!!

    a pioneer family plans to build a barn.they will need 12 large support posts along each side wall and 8 posts along both the front and back walls.they can cut the two posts from each tree that they chop down.How many trees should they chop down?How did you

    asked by Celest
  111. social studies

    1. About how many years was it between the arrivals of the 2 groups of colonists on Roanoke Island? 2. Why was John White's return to Roanoke Island delayed? About how many years was it delayed? 3. What do you think might have happened to the " lost

    asked by Gabby ( 5 grade)
  112. algebra

    Can someone please help. When graphing the equations y = 2x – 2, y = 2x, and y = 2x + 3, what observation can you make about the graphs. Can you make the same observation before graphing the lines? How? Thanks

    asked by algebra need help
  113. Chemistry

    For a one step reaction, the activation energy for the forward reaction is 40.0 kJ/mol and the enthalpy of reaction is -20.0 kJ /mol. Which statement below is true? a. The activation energy of the forward reaction would be affected to a greater extent than

    asked by Mohamed
  114. physics

    A man with a mass of 62 kg skis down a frictionless hill that is h = 3.3 m high. At the bottom of the hill the terrain levels out. As the man reaches the horizontal section, he grabs a 20-kg backpack and skis off a 2.0-m-high ledge. At what horizontal

    asked by trisha
  115. chem

    The standard molar heat of vaporiza- tion for water is 40.79 kJ/mol. How much energy would be required to vaporize 2.54 ×1010 molecules of water? Answer in units of kJ

    asked by sammy
  116. math

    how to graph this y=6x+20 Graph the y-intercept. Show the lines that indicate the use of slope to graph two more points Draw the line representing the graph of the equation

    asked by help please help!!!
  117. geometry

    a sailboat has a sail which is shaped like a right triangle. The base of the triangle is 14 feet and the height is 20 feet. What is the area of the sail? The boat also has two smaller sails that are each half as large as the big one. How big is each of the

    asked by mike
  118. alebra

    how do i simplify 3m+n/4n^2m + 3m +n +5/4n^2m

    asked by allen
  119. calculus

    Given the curve defined by the equation y=cos^2(x) + sqrt(2)* sin(x) with domain (0,pi) , find all points on the curve where the tangent line to the curve is horizontal

    asked by Ashok
  120. Physics

    Traveling at a speed of 16.3 m/s, the driver of an automobile suddenly locks the wheels by slamming on the brakes. The coefficient of kinetic friction between the tires and the road is 0.620. What is the speed of the automobile after 1.60 s have elapsed?

    asked by Loweri
  121. chemistry

    a 10.0L ballon contains helium gas at a pressure of 655mmHg, what is the new pressure, in mmHg, of the helium gas at 20.0L, if no change in temp or amount of gas

    asked by shaun
  122. Math

    mariah bought a rectangular piece of land that was 3 miles long and 2 miles wide.She plans to divide into 2 sections of equal area. if she farms one of the sections how many square miles could be farmed?

    asked by Bobby
  123. math

    Need help Asap....with this wuestion for math>>>>>>> Mrs Garcia has a number cube with the following numbers on it: 4, 13, 8, 46, 8, 9. Whet is the probability that when she rolls it she lends on s factor of 8?...

    asked by myranda
  124. physics

    Someone swints a 3.0 kg mass at the end of a 2.3 m string in a horizontal circle. If the string can withstand a tension of 80 N, at what speed can they swing the mass before they risk a lawsuit?

    asked by becky
  125. math

    the radius of a circular garden is 15ft. about how much fencing will be needed to go around the uoter edge of the garden?

    asked by Anonymous
  126. algebra 1b

    5x-2y=4 x+2y=8

    asked by eric michael lovato
  127. math

    Mr Lopez is putting a fence around his vegetable garden. The garden is shaped liked a rectangle. The longer sides arre 14 feet long, and the shorte sides are 9 1/2 feet long. How much fencing should Mr. Lopez buy?

    asked by widline
  128. math

    A) 2 5/8 x 3/14 i got 1 31/32 B) 2 1/10 x 3 4/7 i got 8 1/2 are these correct?

    asked by jocelyn
  129. Geography

    How are Rift Valleys formed and which two plates formed the Thingvelir Rift Valley in Iceland? Please help!

    asked by Barbie
  130. Geometry

    name the integer values of x that form a triangle with 12-x, 12, 12+x

    asked by Austin
  131. algebra

    Can someone please help. Explain how you can determine from the graph of a system of two linear equations in two variables whether it is an inconsistent system of equations. Thanks

    asked by algebra need help
  132. 6th Math

    Don decided to do some landscaping in his backyard. He began by watering the lawn. The rotating sprinkler that he installed can spray an area with a radius of 7 feet. What is the maximum area the sprinkler can cover? a. 21.98 ft(2) b. 28.26 ft(2) c. 43.96

    asked by Ty
  133. Physics

    Block M (mass of 15.65 kg) is initially moving to the left with a speed of 3.77 m/s. The mass of m is 8.26 kg and the coefficients of friction are Us = 0.411 and Uk = 0.304. The string is massless and the pulley is massless and frictionless. How fast will

    asked by Zach
  134. math

    pete colored 1/2 of a poster. rebecca colored 1/3 of the poster. what fraction still needs to be colored?

    asked by Anonymous
  135. math

    Use the following situation to answer the next four questions. The formula for these questions came from the police department. They use this formula to determine the speed at which the car was going when the driver applied the brakes, by measuring the

    asked by krysta
  136. Health

    Maintaining a healthy diet can protect you from? A. Drug abuse B. Alcohol abuse C. Some cancers D. Sickle cell disease

    asked by Taylor
  137. English

    I left out the following sentences. Thank you very much. 1) The man in the middle is wearing his pink hair in cornrows and has a ring earring in his right earlobe. He’s looking down and has a black, studded, leather jacket on. 2) Next to him I can see

    asked by Henry
  138. psychology

    a condition of late adulthood in which the pressure in the eye increases

    asked by ashley
  139. chemistry

    do hydrogen bonds form between methanol (CH3OH) molecules? no, because methanol does not contain fluorine or nitrogen atoms yes, because methanol has a hydrogen attached to an oxygen atom may vary depending on the temperature

    asked by krystal
  140. Math

    There are 24 students in Mrs.Smith's 1st block class. 1/4 of the class passed the math test with an A. 12 students in the class passed the math test with a B. What percent of the students in the class passed the test?

    asked by Grace
  141. Algebra

    Hint: Pay attention to the units of measure. You may have to convert from feet to miles several times in this assignment. You can use 1 mile = 5,280 feet for your conversions. 1. Many people know that the weight of an object varies on different planets,

    asked by Vickie
  142. math

    how many inches are in 12 yards?

    asked by shion
  143. chemisry

    In order for a reaction to occur, particles must ______ in the proper _____ . What are the 2 words would be correctly fill in the blank? Thanks

    asked by Misa
  144. chemistry

    What are the accepted values for the number of moles of NaCl that are produced from HCl and the following various amounts of grams of NaHCO3; 0.25 grams 0.5 grams 1 gram Please Help!

    asked by Sharon
  145. math

    Find the discriminant. Tell which conic section each graph will be. 4x^2 + 9y^2 +7x-2y-100=0 4x^2+14xy+7x-2y-100=0

    asked by Rick
  146. Chemistry-gases

    Nitrogen dioxide reacts with water and oxygen in the atmosphere to produce acid rain. 4NO2(g) + 2H2O(g) + O2(g) = 4HNO3(g) Assuming that the temperature and the pressure remain constant, calculate the volume of air at 1 atm, 20 C, necessary to dilute the

    asked by Rose Bud
  147. Anthropology

    In dancing with skeletons, in mali, who is usually blamed if a child is born with something the matter with it?

    asked by Sarah
  148. Calculus AP

    implicit differentiation Find the slope of the tangent line to the curve xy^3 + 2y - 0.76 =0 at the point (-3, o.7) I'm lost. so 3xy^2 * y' + 2y = 0 right?

    asked by karen
  149. Stats

    Explain how to calculate margin of error. What effect does increasing your sample size have on the margin of error? What effect does it have on the confidence level? What effect does it have on the confidence interval?

    asked by Kelly
  150. physics

    A car is rounding a curve with a radius of 12.0 m at 8.2 m/s when it hits a slippery patch. What is the minimum coefficient of static friction between the car and the slick patch of road that will allow the car to round the corner safely?

    asked by becky
  151. math

    What is the value of the output for the function, g(c) = 19 c2, if the input is 4?

    asked by rob
  152. chemistry

    If 2.0 mL of 0.80M copper (II) sulfate and 8.0 mL of water are mixed, what is the concentration of the resulting solution?

    asked by roger
  153. 11English

    this is about the book "Oedipus the King". how can i make two questions about Oedipus from this definition of anger? "The man who is slighted by those who thinks ought to respect him and feel grateful toward him is the more easily offended."

    asked by Rebecca
  154. physics

    A block of mass m = 5.4 kg is pulled up a = 23 incline as in the figure with a force of magnitude F = 35 N. Find the acceleration of the block if the incline is frictionless.

    asked by tash
  155. English

    Writeacher, could you please check these sentences? Thank you. 1) Picture 1 shows some teenagers leaning on a barrier (bar?), whereas two are standing near them. They are all wearing casual clothes: short-sleeved T-shirts or shirts over ripped jeans. 2)

    asked by Henry
  156. PHYSÝCS I

    A monkey is sitting on a wood plate attached to a rope whose other end is passed over a tree branch, as shown in the figure. The monkey holds the rope and tries to pull it down. The combined mass of the monkey and the wood plate is 117 kg. a) What is the

    asked by ADRÝAANA
  157. principles of colors

    To slightly gray paint has an intense blue value what color would you add to achieve the value you want A red b orange c yellow d green

    asked by stella
  158. english

    Which sentence is passive voice? 1. The clerk made five errors. 2. Susan had been in sales for five years. 3. She asked for an adjustment. 4. The report was completed by the entire team.

    asked by passive voice
  159. PHYSÝCS I

    A sky diver of mass 80.9 kg (including outfit and equipment) floats down suspended from her parachute, having reached terminal speed. The drag coefficient is 0.575, and the area of her parachute is 20.27 m2. The density of air is 1.14 kg/m3. What is the

    asked by ADRÝAANA
  160. physics

    Why is Tangential acceleration equal to alpha*Radius?

    asked by Pooja
  161. Word PROBLEM

    if an animal is h high at the shoulder, the the number of steps per second that the animal takes while walking is estimated by N(h)=1.6^1/2...estimate the stepping frequency of a dog that is 1.9 feet high at the shoulders

    asked by KAYG
  162. math

    mr lopez is putting a fence around his vegetable garden the garden is shaped like a rectangle. The longer sides are 14 feet long, and the shorter are 9 1/2 feet long. how much fencing should he buy?

    asked by Anonymous
  163. English

    Writeacher, we left out a few sentences yesterday. I wonder if you could have a look at them today. Thank you. 1) I couldn’t get off last night. It must have been the coffee. His lawyer managed to get him off. He got off/away with a fine. 2) On Friday

    asked by Henry
  164. Physics

    A 200 kg wooden crate is dragged at a constant speed by a rope through a distance of 4 m along a wooden floor . The coefficient of sliding friction is .2 . If the work done is 1568 j , and the rope is horizontal, calculate the tension in the rope

    asked by Lorna
  165. Physics

    A 200 kg wooden crate is dragged at a constant speed by a rope through a distance of 4 m along a wooden floor . The coefficient of sliding friction is .2 . If the work done is 1568 j , and the rope is horizontal, calculate the tension in the rope

    asked by Lorna
  166. Science

    1. Which of the following is an example of energy transfer from the sun to a producer and then to a consumer? a. sun warms rocks; squirrels climb over rocks; squirrels are eaten by other animals b. sunlight helps plants to grow and deer eat plants c. sun

    asked by Cheryl
  167. algebra

    Can someone please help. When you solve a system of equations by the substitution method, how do you determine whether the system of equations is inconsistent? Thanks

    asked by algebra need help
  168. Math

    I am not sure how to convert my Cartesian xyz-coordinates into meters. x = 0.666 y = 0.666 z = 0.327 a = 6,377,563.396 meters b = 6,356,256.910 meters

    asked by Kayla
  169. social studies

    I am writing a report on James Madison. In the report, I must have a paragraph talking about the Peaceful Transition to Power (in the election of 1808) and also about the Foreign Policy (waging the war of 1812). I'm struggling to find information about

    asked by SoccerStar
  170. physics

    What is the acceleration (in meters/second^2) of a freely falling 73.0 kg sky-diver, if air resistance exerts a force of 273 N?

    asked by Anonymous
  171. math

    A rectangular prism has a volume of 4x(cubed) + 30 x(squared) +36x. What linear expressions can represent possible dimensions of the prism? Please explain.

    asked by Jane
  172. CHEMISTRY!!!=0

    Determine pH of each solution: 0.20 M KI i don't know how you know if you use.. K+H2O->KOH + H or... I- +H2O--> HIO +H Im thinking this one... I- + H2O --> HIO + H 0.20M--------------------0-----------0 0.20-x------------------x-------------x there is a Ka

    asked by ALISON
  173. chemistry

    Find the molar heat of vaporization for a substance, if 3.28mol of the substance absorbs 24.8 kJ of energy when it changes from a liquid to a gas. Answer in units of kJ/mol

    asked by nelson
  174. algebra

    0.7x*4=0.8x-7

    asked by bernadette
  175. physics

    A man with a mass of 62 kg skis down a frictionless hill that is h = 3.3 m high. At the bottom of the hill the terrain levels out. As the man reaches the horizontal section, he grabs a 20-kg backpack and skis off a 2.0-m-high ledge. At what horizontal

    asked by trisha
  176. physics

    Toss a baseball bat through the air and it wobbles about its ____________________. A) light end. B) center of mass. C) heavy end.

    asked by jim
  177. math

    the height, h, of a ball t seconds after it is released for a jump shot in a basketball game can be modeled with the equation h = −16t2 + 12t + 8. The rim of the basket is 10 feet high. Which of the following is the correct way to set up the problem to

    asked by krysta
  178. teen alcohol abuse

    I am doing a research outline for it and I have all my notes and everything but I do not know where I should put my infor mation on my paper even though I have a guide line. (English is my worst subject) Here it is this is all I have help please ....

    asked by Jackie
  179. math

    If i sell 50 to 65 sandwhiches in one day what inequality equals the total number of sandwhiches in 5 days?

    asked by Kennendy
  180. Math

    If a voter in the poll is selected at random What is the probability that he or she voted for Phil Montoya? Phil- 400 Eric-260 Alice-340

    asked by DianeCurry
  181. Chemistry: Thermal Energy

    Hi! I have a quiz tomorrow and there are a couple of things that I am confused about: -Why does heat cause convection currents in gases and liquids, but not solids? -How can one object feel warmer than another object if they are at the same temperature?

    asked by Cicilia
  182. physics

    When we studied the concept of work, we learned that work = force x distance. Now we learn that torque = force x distance. What's different about these two definitions?A) For work, distance and force are in the same direction; for torque they are

    asked by jim
  183. math

    In ax(squared) + bx +c, if ac is negative and b is positive, what do you know about the factors of ac?

    asked by Jane
  184. Liinear equations

    Write the equation for this situation the value,V in hundreds of dollars of Bob's stamp collection is 12 dollars more than 1/3 of the age, t(in years)

    asked by Glenn
  185. algebra

    Simplify - 2 / (the 6th root of 81)

    asked by Liz
  186. American Gov't--please check

    How are the numbers of electors for each state decided? 1.)Each state gets one elector. 2.)Each state gets two electors. 3.)Each state gets as many electors as it has senators. My answer4.)Each state gets as many electors as it has members of Congress.

    asked by Mackenzie
  187. algebra

    how do i simpllify 5/x + 4/x^2 - 3/x^3

    asked by allen
  188. math

    Vocabulary: What are the parts that make up a polynomial?

    asked by Jane
  189. Algera

    Ms. Pecho currently owes $637.50 simple interest on a loan of $2500 at a anual inteest ate of 17%. How long has she had the loan?

    asked by John
  190. Geolegy

    How are fossils used as a tool to determine records of various events, such as the vanishing dinosaurs or our ancestors’ origin? What are the advantages of using fossils as an accurate measure of time? What are some limitations?

    asked by debra elkanick
  191. eng

    What is the pronoun in this sentence: Me Smith gave it one more try before giving up on the mower How does the noun function and what is the pronoun class?

    asked by Rita
  192. Calculus

    If f(x) has zeros at x=a, and x=b, the x coordinate of the turning point between x= a and x=b is 1/2(a+b). PLease help i don't understand this!

    asked by AAron
  193. physics

    wooden box weighing 271 N is pushed across the floor by a workman who exerts a horizontal force of 144 N. If the force of friction between the box and the floor is 28 N, what is the acceleration (in meters/second^2) of the box?

    asked by Anonymous
  194. Geography - Italy

    My teacher gave us a reprt to do a brochure on italy such as currenices, goverment, sports, restaurants, and so far I have about 2 good website (withuout wikipedia!!!).

    asked by Francis
  195. Geometry

    The vertical slide ladder at the community swimming pool is 12.5 meters tall. The angle created by the top of the ladder and the top of the slide is 38°. Find the approximate length of the swimming pool slide to the nearest hundredth.

    asked by Makenzie
  196. physics

    a ball is thrown from level ground at 24 m/s, 30 degree above horizontal. How much time will it take to reach its maximum height? solution

    asked by tns
  197. chemistry

    what is the difference between an inhibitor and a catalyst in a chemical process?

    asked by joe
  198. Math

    mariah bought a rectangular piece of land that was 3 miles long and 2 miles wide.She plans to divide into 2 sections of equal area. if she farms one of the sections how many square miles could be farmed?

    asked by Bobby
  199. statistics

    You are studying the rate of incidence of skin cancer in people who live near the equator. Your survey of 200 people from the area has shown that 7 of them developed skin cancer. Provide a 99% confidence interval for the true rate of incidence.

    asked by Lisa
  200. Math-properties

    c(a*b) = (c*b)a Is this commutative, associative, or both? It feels like it is commutative since numbers change their order. However, it feels like it is associative, because different numbers are grouped together in the parenthesis. Is it possible to show

    asked by Lisa
  201. Chemistry-gases

    Nitrogen dioxide reacts with water and oxygen in the atmosphere to produce acid rain. 4NO2(g) + 2H2O(g) + O2(g) = 4HNO3(g) Assuming that the temperature and the pressure remain constant, calculate the volume of air at 1 atm, 20 C, necessary to dilute the

    asked by Rose Bud
  202. Probability and statistics

    The probability that the life time of randomly chosen device is below average, average,above average are respectively 0.2,0.5,0.3. The probability that of the 3 randomly chosen devices lifetimes of 2 are above average and 1 below average equals

    asked by Arun
  203. Math; Please Help!o:

    Tell whether the graph opens upward or downward. Then find the axis of symmetry and vertex of the graph of the function. y=-1/4x^2-24

    asked by Izzy
  204. Col Physics

    If a capacitor has opposite 5.3 micro-Coloumb charges on the plates, and an electric field of 2.3 kV/mm is desired between the plates, what must each plate's area be?

    asked by Michelle
  205. physics

    Imagine a planet that orbited the sun at a distance three times that of Earth. What would the period of that planet be in Earth years?

    asked by becky
  206. math

    . Which is the next term in the number pattern: 77, 64, 53, 44, 37

    asked by jesse
  207. art

    Discuss how the Italo-Byzantine sense can be seen as an evident in Berlinghieri’s St. Francis Altarpiece. Provide at least two scholarly resources other than Gardner’s Art through the Ages in support of you position.

    asked by ree
  208. math magic box

    1-9 numbers are placed in a 3x3 box already the top right box is 1 and the bottom left croner is the number 6 figure what number is in the middle of all to make 18 in each row

    asked by Anonymous
  209. math

    Isabel took 20 minutes to run around the track 6 times. John took 3 minutes to run around the track once. Which student was running faster?

    asked by Unknown
  210. math

    how can you estimate heights and distances you can't easily measure with rulers or tape measures by using the following methods? a) shadows and similar triangles b) mirrors and similar triangles c) small triangles nested within larger triangles. (it's not

    asked by Reyna
  211. Greenspun middle school

    you have 4 pennies, 2 nickels and 3 dimes in your pocket, if you radmonly choose 2 coins, what is the probabioity that both are dimes?

    asked by Jarrett Jordan
  212. college math

    finding the square x^2+16x=0

    asked by Anonymous
  213. ENglish

    why does it make sense for us to form a parody of Romeo and Juliet?

    asked by Anna
  214. ALG@ NEED HELP PLEASE

    Explain how to factor the following trinomials forms: x2 + bx + c and ax2 + bx + c. I am totally lost still I read and read and the concept is lost in my head. Can someone please help me? I know there is more than one way to Factor this.

    asked by KAYG
  215. Chemistry

    What acid or base will you expect to find as a constituent of a) baking soda b) vinegar c) gastric juice d) soda ash e) lye

    asked by BabyMikee
  216. Math

    Expand using logarithm properties: log6 x(x+5)/x^6 I am so confused about this problem. Could anyone explain this to me?

    asked by Tess
  217. PHYSÝCS I

    A crate of oranges slides down an inclined plane without friction. If it is released from rest and reaches a speed of 4.883 m/s after sliding a distance of 2.01 m, what is the angle of inclination of the plane with respect to the horizontal? Please note:

    asked by ADRÝAANA
  218. chemistry

    Do hydrogen bonds form between methanol (CH3OH) molecules?

    asked by krystal
  219. science

    Circle the letter of each sentencethat is true about deep currents. a. they can be thought of as a global conveyer belt. b.it takes them about ten years to flow from the pole to the equator and back. c. they transfer heat through the ocean d. they bring

    asked by Elaina
  220. Math

    Delia works from 8:00 a.m. to 4:30 p.m. and has one hour each day for lunch. How much does she earn for a five-day workweek at $4.80 per hour?

    asked by Marissa
  221. Math

    SIMPLIFY 1. ((x/4)-(1/x)) / ((1/2x)+(1/4)) VERIFY 1. secXsin2X = (2-2cos^2X)/sinX

    asked by Leslie
  222. Physics

    A 200 kg wooden crate is dragged at a constant speed by a rope through a distance of 4 m along a wooden floor . The coefficient of sliding friction is .2 . If the work done is 1568 j , and the rope is horizontal, calculate the tension in the rope

    asked by Lorna
  223. English

    Sorry, Writeacher. I mixed two senteces without realizing it. 1) James prefers to define “youth” as the age in which people are not children any more and not yet adults. 2) James believes that youth culture is always changing since young people are

    asked by Henry
  224. Math

    If you start with a number, subtract 14, then divide by 12, the result is 248. What was the original number?

    asked by Emma
  225. English

    Incorrect sentence: The report considers important factors in choosing a medical facility, ratings of services at the urgent care center, reasons why HMO members do not use the center, and offers suggestions for increase in member usage. I know this has

    asked by Matt
  226. Chemistry

    How do you find the partial pressure?

    asked by Anonymous
  227. ict

    what type of output does the printer produce

    asked by Daisy
  228. Clac- math

    a 20 foot ladder leaning up against a vertical wall begins to slip. the base of the ladder makes an acute angle with the floor. when the angle equals 60 degrees the angle is decreasing at 0.1 radians/second. find the rate at which the height of th upper

    asked by Nikki
  229. 8th grade math

    I need someone to explain how to solve equations with two variables and tell me what the formula or equation is? Please help and explain. Thank you!

    asked by saranghae12
  230. science

    if an object's density is _ than fluid density, the object will _ .

    asked by raven
  231. Chemistry

    I can't figure out a clear way to write out the formatting of the question, but here is a picture. Any help is greatly appreciated. the image is on the website imggur and then then after imgur dot com its /Cus8o

    asked by James
  232. Career

    What are the best ways to market a insurance and risk management company? business sells paper and promises, I can't give discounts and I don't have control of the cost of the insurance or how claims are handled.

    asked by John
  233. algebra

    simplify (2x + 3)(x - 4) =

    asked by Anonymous
  234. physics

    A condition for mechanical equilibrium is that the sum of the forces acting equal zero. Another condition is that the sum of the _____A) centrifugal forces also equal zero B) centers of gravity balance.C) torques equal zero.D) rotational inertias equal

    asked by jim
  235. math

    Jason is trying to make picnic lunches.He has 12 sandwiches, 18 apples and 30 pieces of candy.How many lunches can he mmake if he wants each lunch to have the same number of each kind of food and use all of the food?

    asked by Anonymous
  236. Math

    Rex wanted to build fence around a rectangular lot. The lot measures 75 meters by 50 meters. How much fencing materials does he need?

    asked by Anonymous
  237. chemistry-gases-ppm

    Nitrogen dioxide reacts with water and oxygen in the atmosphere to produce acid rain. 4NO2(g) + 2H2O(g) + O2(g) = 4HNO3(g) Assuming that the temperature and the pressure remain constant, calculate the volume of air at 1 atm, 20 C, necessary to dilute the

    asked by Rose Bud
  238. english

    Can you read this for grammar errors By taking a Modern World Literature class, one should expect to read novels about cultures throughout the world, and I think Snow Flower and the Secret Fan did a wonderful job in portraying the customs and traditions of

    asked by krysta
  239. physics

    The main reason railroad trains remain on their tracks has to do with the ____________________. A) None of these.B) beveled shape of the wheel circumference.C) independence of opposite wheel motions.D) All of these. E) flange on their wheels.

    asked by jim
  240. Language

    The book says:" Add as many prefixes as u can to the word "form". Try to make at least 5 words.

    asked by <3
  241. English

    I left out the following descriptions. Can you please have a look at them, too? Thank you. 1) Picture 4 shows a vending machine in the left corner, a white table with five coloured chairs around it in the middle and a noticeboard hanging on a wall in the

    asked by Henry
  242. professional communication

    Analyse the following argument: Desert animals are strong. A camel is a desert animal. Therefore a camel is a strong animal.

    asked by Maretha
  243. math

    5x-(2a^6•16b)= -3b(6a^2 -(5bx))

    asked by Sam
  244. Chemistry

    Sometimes as a solute dissolves in a solvent, the solute molecules dissociate to some extent. Sometimes solute molecules associate to form larger molecular units, such as dimers or trimers. Discuss the effect of dissociation and of association on the

    asked by Paula
  245. math

    Describe how to find linear expressions for the possible dimensions of a rectangular prism with a volume of 8k(cubed) + 26K(squared) +6K.

    asked by Jane
  246. chemistry

    How do you balance a chemical reaction word equation?!

    asked by Lacey
  247. 3 grade english

    when you read you can somethimes make a general statement, or generalization,about inividual ideas in the text. a generalization tells how ideas are mostly alike or all alike. directions read the following passage. people of all ages can play basketball

    asked by dk
  248. Algebra II

    Simplify - 2/(the 6th root of 81)

    asked by Liz
  249. Math

    Adam has 245 stickers. He wants to put 25 stickers on 10 pages of his book. How many more stickers does he need?

    asked by Anonymous
  250. Statistics

    Explain how to calculate margin of error. What effect does increasing your sample size have on the margin of error? What effect does it have on the confidence level? What effect does it have on the confidence interval?

    asked by Tom
  251. Applied Social Research Method

    I need some help. For a class I need to do the following: Frame a proper research question and complete the following research processes: tell me your variables, define or conceptualize all you terms and variables, tell me what level of measurement you

    asked by Crystal
  252. Spelling

    Substitute a word beginning with re- for each of the underlined phrases. 1) The patient was(admitted again) after.. 2)I would like you to(copy this assignment)in.... 3) When the CD player broke I asked for my money (back again)

    asked by flower
  253. chemistry

    if we have 1 galon of C8H18 hom many galons of water will be produce?

    asked by Anonymous
  254. Reading!!

    a.Smiling, Sven set his bow to ease as the wary doe ran back into the forest. b.A sudden snap of twigs alerted Sven to an advancing deer. c.Silently, Sven notched his bow with a slender arrow. Rate each sentence by degree of excitement in this manner:

    asked by Victoria
  255. geometry

    A sphere has a surface area of 32in².If the diameter is halved, find the surface area.

    asked by Edith
  256. coordinate geometry

    Find the value of x such that PQ=QR where the coordinates of P,Q and R are [6,-1], [1,3]and[x,8] respectively

    asked by Anonymous
  257. probability

    A number is selected from 1 to 27.fing the probability that is a prime number?

    asked by Anonymous
  258. Life orientation

    How to address the HIV/AIDS in your community

    asked by Nommy Dlamini
  259. arithmetic

    find the sum of all 3digits numbers ,which leave the remainder three when divided by 5.

    asked by Anonymous
  260. Tax Intro

    The taxpayer's spouse died at the beginning of 2010. He has no qualifying child. Which status should the taxpayer select when filing his tax return for 2011? A. Single B. Married Filing Separately C. Married Filing Jointly D. Qualifying Widow(er) is it D

    asked by Billy
  261. arithmetic

    I have a 10"x13" rectangle baking pan, 2" deep. I am having a party and need to know how many pieces can be cut for 50 people? Or how many can be cut?

    asked by Nes
  262. art

    Explain how Florence reflects the ideals of the dominant city-state and how some of the geographical, economical, social, and artistic forces shape this ideal. Use one example from Gardner’s Art through the Ages and one example from the Internet. I

    asked by ree
  263. Physics

    This problem is about the work-energy theorem. What is the final speed of the particle? Express your answer in terms of K_f and M.

    asked by Jenni
  264. Chem 100

    If the initial volume is 150mL and the final volume is 1L, what is the final pressure?

    asked by Jen
  265. ENG 365 Issues in Literature

    I have a summary paper to do that is suppose to be 8-10 pages. The problem that I am having is where to get started. This is what the teacher want us to do. Relate your life in work, social responsibility, and/or individual responsibility to a literary

    asked by Anonymous
  266. math

    Which is the 19th term in the sequence: an = -2(n - 3)?

    asked by BritBoss
  267. math/ geometry

    Write the statement in symbols using the p and q given below. Then construct a truth table for the symbolic statement and select the best match. p = At most, 100 guests arrived at the wedding reception. q = There was a lot of cake left over. It is not the

    asked by Di
  268. biochemistry

    explain the role of protein misfolding and aggregation in bovine spongeform encephalopathy

    asked by jo
  269. american goverment

    What form of Federalism was most recently associated with the United States? . . can somebody help me please!! thanks

    asked by lalt
  270. English

    What do you think about my essay? "A little bit longer and I will be fine" “..And you do not know what you got until it is gone, and you do not know what i s like to feel so low...” A quote written by Nick Jonas to express how he felt after being

    asked by Diana
  271. math

    x^2+y^2=36 is a circle. How can you tell without actually plotting? Where is the center?

    asked by Ryan
  272. math

    Which represent the first three terms of the sequence: a1 = 2 and an = 3(an - 1)^2?

    asked by Jim155
  273. Probability and statistics

    The probability that at most 3 tosses of a balanced dice are required to get a prime number on top is equal to a. 7/8, b.1/4, c. 1/2, d.3/4.

    asked by Arun
  274. Algebra

    If A=(x-y)-z and B=x-(y-z), then A-B= what?

    asked by Al
  275. MATH

    WHICH DESCRIBES THE NUMBER IN A DATA SET THAT OCCURS MOST OFTEN A.MEAN B.RANGE C.MODE OR D.MEDIAN

    asked by JALEAHA
  276. Chemistry

    What will the molarity be if 12 drops of the blue dye solution is mixed with enough water to make one liter of solution (assume that 20 drops is equivalent to 1mL) Im not sure where to start?

    asked by Kristen
  277. Statistics

    Why do so many of life's events share the same characteristics as the central limit theorem?

    asked by Terri
  278. Math

    A continuously running washing machine receives jolts in a Poisson process at an average rate of 5 jolts per hour. The probability that it receives no jolts in given 20 minutes run e-5,e-5/3,e-100,e-100/3

    asked by Arun
  279. Chem.

    what is the volume of 4 moles of a gas if the pressure is 3.5 atm and the pressure is 25C

    asked by Saul
  280. Science

    If a man has a mass of 90 kg on earth, what is his mass on the moon?

    asked by Liz
  281. physics

    Determine the velocity of a satellite orbiting Earth at a height of 3.2 x 10^3 meters.

    asked by becky
  282. Math

    If Logx (1 / 8) = - 3 / 2, then x is equal to A. - 4 B. 4 C. 1 / 4 D. 10

    asked by running.from.myself
  283. stoichiometry

    What mass of nitrogen monoxide can be made by the reaction of 8.00 g ammonia and 17.0 g oxygen? correct answer is 12.8 ± 0.1 (g) I keep getting 14.1 g and that the limiting reagent is NH3 What am I doing wrong?

    asked by Rose Bud
  284. Science

    Need 10 labels for the cell reproduction sytem

    asked by Anonymous
  285. Math

    Each fire hose is 25 yards long. What is the minimum number of hose for a 230 ft distance? (I think I have to convert 230 ft into yards which is 76.666 yards. So I think I need a miminum of 4 hoses. ) Am I correct?

    asked by tj
  286. 4th grade challenging math questions

    a pioneer family plans to build a barn.they will need 12 large support posts along each side wall and 8 posts along both the front and back walls.they can cut the two posts from each tree that they chop down.How many trees should they chop down?How did you

    asked by Celest
  287. math

    (4 − 2x)−2 x=-2 y=4 z=-3 how do you solve this? i have solved it and gotten 6 for my answer many times and it says it's wrong. other equations are (y − z)−3 and (x − 5y)0. i cant get them right

    asked by krysta
  288. Science

    What causes El Ninõ or La Niña to form?

    asked by Elaina
  289. Science

    Is the following sentence true or false? A surface current warms or cools the air above it, influencing the climate of the land near the coast.

    asked by Elaina
  290. physics, help with circuits please!

    Can the voltage across any of the three components in the R-L-C series circuit ever be larger than the maximum voltage supplied by the AC source? That maximum voltage is 50 volts in this situation. Also, does Kirchoff's loop rule apply to this circuit? In

    asked by Jim
  291. math

    Given the formula A = ðr2, find the area (A), of a circle whose radius is 34,500,000,000 m. how do you solve?

    asked by krysta
  292. Math

    Find the POI (point of intersection) for the following set of lines: y=4x-1 and y=3x+4 I know how to plot them on a graph, and find out the POI that way, but how can I find the POI through an equation?

    asked by Raluca
  293. math

    In a particular small town, the population in 1995 was 1200. Ever since then the population has grown by 4% every year. If conditions stay the same, what is the approximate expected population in the year 2000?

    asked by krysta
  294. ACCT

    The question is: In the journal provided, prepare year- end adjustments for the following situations. Omit explanations. a. accrued interest on notes receivable is $105 b. of the $12,000 received in advance of earning a service, one third was still

    asked by Tan
  295. math

    Write an expression for the volume of a rectangular prism if the length is 5 feet shorter than some x amount, the width is 3 feet longer than x, and the height is x feet.

    asked by josh
  296. math

    Rewrite using only positive exponents: x−5y3. ??

    asked by josh
  297. math

    jody earned $10 by running errands and spent 1/4 of the money to find what she spent you could multiply $10 by

    asked by Anonymous
  298. math

    In a large city league, the boys' baseball teams hold a tournament. If there are 40 teams in the league and half of the teams are eliminated in each round of games, how many teams are left after 3 rounds?

    asked by alyssa
  299. Calculus theory

    Determine if the statement is always true, sometimes true, or never true. If y is a function of x, and is also a function of t. then dy/dx = dy/dt explain. i think its sometimes true but i don't know why it is. am i right?, and can you please explain me y

    asked by AAron
  300. Science

    What are deep currents and how do they form?

    asked by Kendra
  301. Ethics Applied

    I have to watch a movie of my choice and then write a paper consisting of 4-5 paragraphs about 2 characters and a major moral issue they each face and then identify the moral approach (egoism, religious ethics, and contractarianism) each uses to resolve

    asked by Shelby
  302. Psycology

    What does Framing means?

    asked by Dalia
  303. calculus

    a box with mass 34.1 is held stationary on a rmap inclined at an angle of x degree by a force of 100 N at an angle of 30 degree to the plane. Find x.

    asked by Jessie
  304. Algebra

    How do I calculate 4^n=1/(2(n-n^2))? Thanks.

    asked by Helga
  305. math

    water flows out through a circular pipe whose internal diameter is 2 cm at the rate of 6 metres per second into a cylindrical tank. the radius of whose base is 60 cm. find the rise in the level of water in 30 minutes

    asked by arnab
  306. writing

    composition on plan for summer holiday

    asked by kavitha
  307. trig

    bernhardt and julia are observing an eagles nest in a tree. Julia is 75m from the tree, and sees it at an angle of elevation of 42 degrees A)How high up the tree is the nest B)Bernhardt is standing 30m behind julia. At what angle of elevation does he see

    asked by Math
  308. English

    I am having a hard time understanding passive voice? Could someone please help? Which sentence below is passive voice? 1. She served the customer the food. 2. The food was served to the customer. 3. The customer asked to change the order. 4. The server too

    asked by Help asap
  309. math

    how do you make 87 cents with 6 coins none of which are half dollars

    asked by tiffany
  310. english

    I am having a hard time understanding active voice. Can anyone please assist? which following sentence is active voice? 1. The new product line was developed by the Research and Development department? 2. The secretary was promoted by her supervisor to an

    asked by active voice
  311. crucible

    account foe bettys condition in act one pleeez

    asked by kashifa
  312. math

    william wants to known how many kilograms a 1000 gram cantaloupe weighs he converts the measurement and says the melon 1,000,000 kilograms what did he do wrong

    asked by bebe
  313. English

    Writeacher, could you please check these sentences I wrote about a listening a need to prepare for tomorrow. 1) An elderly man remembers the regional tradition on New Year’s Eve when he was a child . In particular, what made New Year’s Eve special (for

    asked by Henry
  314. history

    could you please give me any information about houses in hot dry countries

    asked by jack
  315. math

    For the next three problems, evaluate each expression if x = −2, y = 4, and z = −3. (4 − 2x)−2 (y − z)−3 (x − 5y)0

    asked by josh
  316. math

    how can you estimate heights and distances with mirrors and similar triangles?

    asked by Leda
  317. communication

    I need to complete an outline and thesis statement on "Two female Chihuahuas living in the same household.I don't understand how and what information to write.

    asked by Madi
  318. math

    How do I find the area of a cylinder if the quiestion says the base has a radiuse of 5 feet using pie 3.14 and the length is 12?

    asked by Reyna
  319. math

    Rewrite using only positive exponents: x−5y3 how do you rewrite without negative exponents?

    asked by katrina
  320. English

    Thank you very much, Writeacher. Could you please check these sentences I need to include in an email? Thank you. 1) I got the email address of your school on the the E-Twinning platform. I really hope your school is still interested in a school exchange

    asked by Henry
  321. Math

    For each point in a set of points, its distance from (-2,4) is three times its distance from the line x=6 1. find the equation 2. tell which conic section the graph will be.

    asked by Steven
  322. chemistry

    if excess NH3 is reacted with 0.438 mol of O2, how many moles of H2O will be produced? 4NH3+7O2-->4NO2+6H2O

    asked by Justicee
  323. English - ms. sue

    ms. sue sorry yesterday i ask question that not make sense but i be talking about the occasion question where rock say the bith word for second time it ask when be this second occasion? first occasion be daytime and second occasion be night time? also i

    asked by Mohammad
  324. math

    how can you estimate heights and distances you can't easily measure with rulers or tape measures by using the following method? small triangles nested within larger triangles.

    asked by HELP HELP HELP
  325. grammar

    If I put a sentence here listing the dependent and independent clauses within the sentence can you tell me if I am correct. Here is the sentence. I have read several fairy tale collectionthat include th Cinderella story, but my favorite is a book that

    asked by Olivia
  326. chemistry

    objective and conclusion for experimenting a baking sosa - sand mixture for a mole-grams and molecules

    asked by Anonymous
  327. Chemistry

    I was wondering if anyone could describe a general Friedel-Crafts alkylation to me. I understand that it involves the substitution of an aromatic ring with an alkyl group using a strong Lewis acid catalyst. But, what types of activating groups are present

    asked by Jenny
  328. Maths

    The first term of an arithmetic sequence is 2. The first, third and eleventh terms are the first three terms of a geometric sequence. Determine the seventh term of the geometric sequence

    asked by Anonymous
  329. math

    How can you decide whether a photo or drawing can be enlarged or reduced to fit a space without distorting the shape?

    asked by Lizette
  330. math

    In a particular small town, the population in 1995 was 1200. Ever since then the population has grown by 4% every year. If conditions stay the same, what is the approximate expected population in the year 2000?

    asked by katrina
  331. home economics

    uses of a sleeve

    asked by Daisy
  332. algebra

    Can someon please explain why the point-slope formula cannot be used to find the equation of a line that is parallel to the y-axis. Thanks

    asked by algebra need help
  333. Geometry

    In triangleRST, mangR = (2x + 10)­­°, mangS = (2x + 25)°, and mangT = (x – 5)°. Find the value of x.

    asked by Sam
  334. geometry

    acute h has a measure of 50 degrees what is the measure of acute i explain answer

    asked by dann
  335. statistics

    . An automobile is selling a new model car with an advertised in‐city mileage of 27 MPG. As with most car models, there is no associated measure of variability (variance, SD, etc.) included with the advertised MPG. You write the manufacturer and request

    asked by MJ
  336. math

    when ordering supplies , mr.williams accidentally ordered 12 more than twice his usual number of pencils.when the order arrived , he received 60 pencils. how many pencils does mr.williams usually order?

    asked by judy
  337. English

    I left out a sentence,writeacher. Thank you. He is holding a pen on/over his right ear. A pen is sticking on his ear.

    asked by Henry
  338. math

    the probability that an imdividual is left-handed is 0.30 in a class of 25 students, what is the the mean and standard deviation of the number of left-handers in the class

    asked by ghb
  339. math

    In ax(squared) + bx +c, if ac is negative and b is positive, what do you know about the factors of ac?

    asked by Jane
  340. physics

    1. Which will roll faster down an inclined plane, a can of water or a can of ice? A) A can of water. B) Both the same. C) A can of ice.

    asked by jim
  341. calculus

    FInd the area of the region bounded by the graphs of y= 3x^2+1 , y=0, x=-2.7, x=2.5

    asked by Maddie
  342. Math

    Point B is 10 KM north of Point A and Point C is 10 Km from B on a bearing of 060 from b. Find the bearing and distance of C from A 

    asked by Sanjay
  343. Math

    If the input number is 100qhat is the output?

    asked by DianeCurry
  344. marketing2

    Identify your preferred pricing strategy (penetration, skimming, prestige, odd-even, or other pricing strategies listed in Chapter 12). Describe your decision for choosing this particular pricing strategy

    asked by kesha
  345. Math please help urgent !

    y= u+3/u-1 u=x^1/3 find dy/dx at x=8

    asked by michelle
  346. math

    The length of a rectangle is 3 inches more than its width. Write an equation for the area of the rectangle in terms of width, w.

    asked by krysta
  347. math

    The length of a rectangle is 3 inches more than its width. If the area of the rectangle is 180 square inches, write an equation for the above situation

    asked by alyssa
  348. physics

    if a race car's velocity increases from 4 m/s to 36 m/s over a 4 s time interval, its average acceleration would be 10 m/s 2 ? IS THIS TRUE ?

    asked by Anonymous
  349. math

    x over 5,2x over 15,3x over 45,12 over 135 Find the value of x in the above sequence

    asked by lee
  350. English

    Thank you very much, Writeacher. Can you check these descriptions of pictures I need to prepare for tomorrow, too. 1) Some workers are at a self-service restaurant (I think it is a sort of canteen in their own firm) and they are choosing their meals from a

    asked by Henry
  351. English

    Thank you very much, Writeacher. I still have to describe a few pictures. 1) Picture 1 shows some teenagers leaning on a bar, whereas two are standing near them. They are all wearing casual clothes: short-sleeved T-shirts or shirts over a pair or ripped

    asked by Henry
  352. chemistry

    3 ag (s) + 4 HNO?(aq) -> 3 AgNO?(aq) = 2 H?O(i) + NO (g)

    asked by Anonymous
  353. Chemistry--Plz HELP!

    How would i go about balancing the following equation? My teacher said something about the charges: Silver Nitrate + Sodium Phosphate = Silver Phosphate + Sodium Nitrate

    asked by Ali
  354. Math

    4 loaves of bread cit into 10 slices. 18 people eat 2 slices. What is the fraction that shows how much bread was eaten

    asked by Ben
  355. stats

    The vice-president of a business firm has reviewed the records of the finn's personnel and found that 70% of the employees read The Wall Street Journal. If the vice-president was to choose 12 employees at random,what is the probability that the number of

    asked by tim
  356. math

    You have 25-1.5foot fence pieces and 1--1.5foot gate. If you place the fenced zone against a barn of infinite size, what is the maximum possible (rectangular) area in the fenced zone, and how long are the sides?

    asked by Adam
  357. math

    Use your graphing calculator to find how many seconds before the projectile hits the ground. Let y1 = −16t2 + 800t, or factor and solve for t algebraically

    asked by alyssa
  358. Language

    What is the longer form for this clipped word" caf "?Thank u

    asked by <3
  359. math

    how many yards are in 144 inches?

    asked by shion
  360. Algebra 2

    find all the zeros of the polynomial function F(x)= x^4+4x^3-6x^2-36x-27

    asked by kaley
  361. Thinashaka

    Write 0,25% as a fraction

    asked by Anonymous
  362. math

    how many yards and inches are in 45 inches?

    asked by shion
  363. Please Please help!! Math

    Some cicadas called 13 year locusts come above ground every 13 years, while others called 17 year locusts come out every 17 years. Mark's grandmother told him about a terrible year when then cicadas were so numerous that they ate all the crops on her farm.

    asked by Brittany M.
  364. geometry

    The diagram below represents the graph of f(x)=a over x-p +q.T(5;3) determine the values of a,p, and q

    asked by Kgalalelo
  365. math

    a 1000 acres of forest decreases at an annual rate of 22%, write a function

    asked by Anonymous