Questions Asked on
March 12, 2012

  1. Chemistry

    1) Prepare 100mL of 10%w/w HCl from 37%concentrated HCl(density of 37%HCl =1.19g/ml) 2) Prepare 100mL of 10%w/v HCl from 37% concentrated HCl(density of 37%HCl=1.19g/ml) Can you please show the calculation steps for 1) & 2)? Is 10%w/v HCl the same as

    asked by Annie
  2. English 11

    1. Olaudah Equiano wrote (1 point) a book of letters to his African family. a history of the West Indian slave trade. stories of early slavery in Virginia. the first autobiography by a black man in America. 2. The term “the Middle Passage” refers to (1

    asked by robert
  3. math - calculus

    Suppose that water is pouring into a swimming pool in the shape of a right circular cylinder at a constant rate of 9 cubic feet per minute. If the pool has radius 3 feet and height 11 feet, what is the rate of change of the height of the water in the pool

    asked by Justine
  4. Living Environment(please check answers)

    1-true 2-false 3-not enough info Transplanting genetic material into bacteria is a simple task- 2 Under certain conditions, bacteria reproduce at a rapid rate-3 The continued use of insulin from animals many cause harmful side effects in some people- 1 The

    asked by Anna
  5. critical thinking test AU

    1. Question : The average height of members of the high school basketball team is six feet, three inches. Jerry is on the high school basketball team, so Jerry must be taller than six feet. The argument above is flawed because it confuses: Student Answer:

    asked by jack
  6. physics

    Calculate the resistance of a 900 watt toaster operating at 120 volts. a) R= 10 ohms b) R=120 ohms c) R= 16 ohms d) R=1.6 ohms

    asked by Thomas
  7. Math:Trig.!!!!

    You (safely) bungee jump from a 200-feet tall bridge in your town. Your distance above the water's surface depends on the time since you jumped. Sketch a reasonable graph.

    asked by Claries
  8. AP CHEMISTRY

    Calculate the solubility of Mn(OH)2 in grams per liter when buffered at each of the following. a) pH 7.4 b) pH 9.2 c) pH 11.5 ALL IN GRAMS PER LITER. PLEASE HELP ME AND EXPLAIN

    asked by HELP PLEASE
  9. chemistry 30a

    What volume (in mL) of an 8% w/v acetic acid solution would be needed to form 2.2 L of carbon dioxide gas at 25.2 degrees Celsius and 0.9982 atm? Assume the acid is reacted with excess sodium bicarbonate, and round your final answer to two sig figs.

    asked by sara
  10. The Great Gatsby

    Why did Daisy and Tom spend a year in France? in the great gatsby They wanted their little girl to learn French. There was no reason. Tom’s family bought a house in Paris. i believe the answer is 3?

    asked by LAYLA
  11. AP CHEMISTRY

    Suppose that a 15-mL sample of a solution is to be tested for I- ion by addition of 1 drop (0.20 mL) of 0.30 M Pb(NO3)2. What is the minimum number of grams of I- that must be present for PbI2(s) to form? (Ksp = 7.9 10-9)

    asked by HELP PLEASE to DrBob222
  12. physics

    A car (mass=1100kg) is traveling at 32m/s when it collides head on with a sport utility vehicle (mass=2500kg) traveling in the opposite direction. In the collision, the two vehicles come to a halt. at what speed was the sport utility vehicle traveling.

    asked by Natasha
  13. CALCULUS

    A cylindrical oil storage tank 12 feet in diameter and 17feet long is lying on its side. Suppose the tank is half full of oil weighing 85 lb per cubic foot. What's the total force on one endof the tank?

    asked by Mishaka
  14. physics

    In a football game, a receiver is standing still, having just caught a pass. Before he can move, a tackler, running at a velocity of 4.5m/s, grabs him. The tackler holds onto the receiver, and and the two move off together with a velocity of 2.6m/s. The

    asked by Natasha
  15. Chemistry

    Calculate the percent ionizationof a 0.15 M benzoic acid solution in pure water Nd also in a solution containing 0.10M sodium benzoate. Why does the percent ionization differ significantly in the two solutions?

    asked by L.Bianchessi
  16. Physics

    Starting from rest, a 1.6x10-4 kg flea springs straight upward. While the flea is pushing off from the ground, the ground exerts an average upward force of 0.42 N on it. This force does 3.6x10-4 J of work on the flea. (a) What is the flea's speed when it

    asked by April
  17. science

    how far will 350 jules raise a block weighing 7n

    asked by christian
  18. liviing environment

    Transplanting genetic material into bacteria is a a simple task?

    asked by Anna
  19. chem-carbs

    D-ribose is treated with a mild oxidizing agent. What is the product of this reaction?

    asked by casey
  20. Calculus (Definite Integrals - Force) Please Help

    A cylindrical oil storage tank 12 feet in diameter and 17feet long is lying on its side. Suppose the tank is half full of oil weighing 85 lb per cubic foot. What's the total force on one endof the tank?

    asked by Mishaka
  21. algebra

    ben bought a car for $20,000 in 2003. The car depreciates at a constant rate of 21% per year . Find the price of the car in the year 2010 . Round to nearest dollar

    asked by Johnson
  22. physics

    Am 85kg jogger is heading due east at a speed of 2.0m/s. A 55kg jogger is heading 32 degrees north of east at a speed of 3.0m/s. Find the magnitude and direction of the sum of the momenta of the two joggers.

    asked by Natasha
  23. Physics

    A 500.0 g metal block absorbs 3.25 × 103 J of heat to raise its temperature by 50.0 K. What is the substance? Please show steps because I have several problems like this and then I can see where I am goibg wrong

    asked by Pat
  24. CHEM HELP!

    NH4HSNH3+H2S What is the minimum mass of NH4HS that must be added to the 5.00-L flask when charged with the 0.300g of pure H2S, at 25C to achieve equilibrium?? Kp=.120 at 25C initial pressure of H2S in flask = .0431atm partial pressures of H2S and NH3

    asked by student
  25. Chemistry 2

    An industrial chemical reaction has a rate law: rate = k [C]. The activation energy for the reaction is 3.0000 x 10^4 J/mol and A = 2.000 x 10^-3. What must be the reaction temperature if a rate of 1.000 x 10^-9 M/s is required and [C] must be kept at

    asked by Jessica
  26. Calculus (Definite Integrals - Fluid Pressure)

    The ends of a water trough have the shape of the region bounded by the graphs of y = x2 and y = 4 with x and y both measured in feet. To what depth must the trough be filled with water so that the force exerted by the water on either end of the trough is

    asked by Casablanca
  27. Chemistry

    write the balanced chemical equation for reaction the following chemical reaction ozone gas, O3 , reacts with 3,3,4,4,5,5-hexamethyl-1-hexyne, H-CßC-C(CH3)2-C(CH3)2-C(CH3)2-CH3 to produce carbon dioxide gas, CO2 , and water gas , H2O . When balancing

    asked by Susan
  28. chemistry

    H2SO4(aq) + NaOH(aq)-> Na2SO4(aq) + H2O(l) Consider the unbalanced equation above. What is the concentration of the original sulfuric acid solution if 60.5 mL of the acid reacts with 18.0 mL of 0.110 M sodium hydroxide?

    asked by jade
  29. Chem!!!:/

    Calculate the ratio of NaF to HF required to creAte a buffer with pH=4.00.

    asked by Davis
  30. physics

    A baseball (m = 151 g) approaches a bat horizontally at a speed of 39.8 m/s (89 mi/h) and is hit straight back at a speed of 45.7 m/s (102 mi/h). If the ball is in contact with the bat for a time of 1.05 ms, what is the average force exerted on the ball by

    asked by Natasha
  31. business

    Mel's Furniture received an invoice dated September 27 for five bedroom sets at $3,000 each. The invoice indicated a trade discount of 5/8/3. The seller of the furniture prepaid the freight of $200. Terms were 2/10 EOM.Assuming Mel pays on November 2, what

    asked by shawn
  32. Statistics

    The distribution of scores on a test is mound-shaped and symmetric with a mean score of 78. If 68% of the scores fall between 72 and 84, which of the following is most likely to be the standard deviation of the distribution? 3, 1, 4, 6?

    asked by MJ
  33. Chemistry

    Why is a small amount of solute added in the electrolysis of water?

    asked by Chemo
  34. chemistry

    Carbon monoxide gas and hydrogen gas are mixed in a two liter flask. The reaction produces methanol gas as the only product. At equilibrium the Keq is 1.1 x 10-5. The flask initially held 6 grams of hydrogen and the equilibrium concentration of hydrogen is

    asked by Don
  35. Trig-Algebra help asap

    The adjacent sides of a parallelogram measure 8 cm and 12 cm and one angle measures 60 degrees. Find the area of the parellelogram.

    asked by Missy
  36. chemistry

    The urine excreted by an adult patient over 24 hours was collected and diluted to give 2.000L sample. at ph 10 EDTA FORMS 1:1 COMPLEX WITH BOTH Mg2+ and Ca2+ and after buffering at this pH a 10mL aliquot of the sample required 26.81mL of 0.003474M EDTA for

    asked by jenny
  37. Calculus

    Using the trapezoid rule with n = 8 to approximate the arc length of the graph of y = 2x^3 - 2x + 1 from A(0,1) to B(2,13) you get (to three decimal places): A.) 6.900 B.) 13.896 C.) 14.093 D.) 13.688 E.) 13.697

    asked by Mishaka
  38. physics1

    at a playground a child slides that makes a 42 degrees angle with the horizontal direction.The coefficient of kinetic friction for this motion is 0.20 What is the magnitude of her acceleration during her sliding

    asked by thandeka
  39. Calculus (Definite Integrals - Arclength)

    Using the trapezoid rule with n = 8 to approximate the arc length of the graph of y = 2x^3 - 2x + 1 from A(0,1) to B(2,13) you get (to three decimal places): A.) 6.900 B.) 13.896 C.) 14.093 D.) 13.688 E.) 13.697

    asked by Mishaka
  40. Physics

    A student throws a baseball vertically upward, and 2.8s later catches it at the same level. Neglecting air resistance , calculate the following (a) the velocity at which the ball left the students hand (b) the height to which the ball climbed above the

    asked by Melissa
  41. Physics

    A car accelerates uniformly from rest to 21.0 m/s in 6.1 s along a level stretch of road. Ignoring friction, determine the average power required to accelerate the car if the weight of the car is the following. A) 8.0e3N B) 1.2e4N (The answer needs to be

    asked by Natasha
  42. Science

    Which of the following materials will burn the fastest in open air? A. a log, two feet in diameter B. two logs, each one foot in diameter C. a pile of small splinters made from a two-foot diameter log D. Both logs and the splinters will burn at the same

    asked by Samantha
  43. Chemistry

    Kp=1.6 Kp=1.0*10^-4 A2B Find the equilibrium partial pressures of A and B B=1.0 atm A=0.0 atm This is what I have so far A 2B 0 1.0 +p -p p 1-p [B]^2/A (1-p)^2/p = 1.6 then got a quadratic equation of p^2+1.6p-1 to get x=.48

    asked by maura
  44. Physics 111 PLEASE HELP ASAP

    A 37.5-kg child swings in a swing supported by two chains, each 3.05 m long. The tension in each chain at the lowest point is 433 N. the force of the seat on the child is 498.5 N. b)Find the force exerted by the seat on the child at the lowest point.

    asked by lily
  45. Vectors

    a river is 2 km wide and flows at 4km/h. a motorboat has a speed of 10 km/h in still water and heads out from one bank. a marina is directly across the river, on the opposite bank. if the motorboat heads directly toward the marina, how far downstream from

    asked by Tarkan
  46. chemistry

    The time required for the completion of 99.9% of a first order reaction is equal to how many times that of its half life? (A)2 (B)3 (C)5 (D)10

    asked by Poonam
  47. MATHS

    In triangle ABC, BC is produced to D. If angle ACD = 110 degree and angle ABC = 70 degree. Find angle BAC. Give reason.

    asked by Job
  48. physics

    A two staged rocket moves in space at a constant velocity of 4900m/s. The two stages are then separated by a small explosive charge between them. Immediately after the explosion the velocity of the 1200kg upper stage is 5700m/s in the same direction as

    asked by Natasha
  49. Algebra

    The value of almost everything you own, such as a car, computer, or appliance, depreciates over time. When the value decreases by a fied amount each year, the depreciation is called straight-line depreciation. Suppose your car has an initial value of

    asked by kim
  50. Physics

    Calculate the resistance of a 900 watt toaster operating at 120 volts. Which formula do you use?

    asked by Matt
  51. AP CHEMISTRY

    An experiment was carried out to determine the value of the equilibrium constant Kc for the reaction. Total moles of Ag+ present = 3.6 x 10-3 moles Total moles of NH3 present = 6.9 x 10-3 moles Measured concentration of Ag(NH3)2+ at equilibrium= 3.4* 10-2

    asked by Jamba
  52. math

    using two fair dice, what is the probability of rolling a sum that exceeds 4?

    asked by christine
  53. chemistry

    CrCl3(s) + AgNO3 (aq)= AgCl(s) + Cr(NO3)3(aq) A 0.750 g sample of impure CrCl3 was removed from a bottle that contained 1.75 g of impure sample. The removed sample was dissolved in water and required 42.5 mL of 0.215 M AgNO3 solution to react with the

    asked by jade
  54. Chemistry

    how do I balance the following skeleton redox equation for a reaction occurring in acidic solution. HNO2 + MnO4- yield to Mn2+ + NO3-

    asked by Rachel
  55. Science (Chemistry)

    How many grams of dry NH4Cl need to be added to 1.90 L of a 0.200 M solution of ammonia, NH3, to prepare a buffer solution that has a pH of 8.99? Kb for ammonia is1.8*10^-5. Can anyone help me with this question? I have no idea how to solve it.

    asked by Taylor
  56. Chemistry

    you add excess sodium sulfate to a solution of a soluble barium compound in order to precipitate all of the barium ion as barium sulfate, BaSO4. Suppose a 458 mg sample of the barium compound is dissolved to create the solution. Then when the sodium is

    asked by India
  57. chemistry

    Al(s) + H2SO4(aq)-> Al2(SO4)3(aq) + H2(g) Consider the unbalanced equation above. What volume of 0.490 M H2SO4 is needed to react with excess aluminum to produce 1.60 g of Al2(SO4)3? Use a molar mass with at least as many significant figures as the data

    asked by jade
  58. ChemB

    A forming acid solution has a pH of 3.25. Which of these substances will raise the pH of the solution upon addition? Explain. A) HCl B) NaBr C) NaCHO2 D) KCl

    asked by ALISON
  59. organic chemistry

    How many steric interactions are there in CIS-1,3-dimethylcyclohexane? Which groups participate in the interactions and whats the total number of interactions of this type??? Also, if i have the steric strain value for one 1,3 H-CH3 interaction, how can i

    asked by Alex
  60. physics

    A ball on the end of a string is revolving at a uniform rate in a vertical circle of radius 98.8 cm. If its speed is 4.60 m/s, and its mass is 0.345 kg, calculate the tension (in newtons) in the string when the ball is at the bottom of the path.

    asked by george
  61. Calculus (Definite Integrals - Work)

    Recall that work is defined to be force times distance, and that the weight (force) of a liquid is equal to its volume times its density. A fish tank has a rectangular base of width 2 feet and length 6 feet and sides of height 5 feet. If the tank is filled

    asked by Mishaka
  62. ChemB

    CALCULATE PH OF THE SOLUTION THAT RESULTS FROM EACH SOLUTION A) 150.0mL OF 0.25M HF WITH 225.0 mL OF 0.30M NaF Help please, these buffer questions are confusing.

    asked by ALISON
  63. math

    dollar makup $4.70 percent markup on cost 102.17% What is the cost and selling price?

    asked by bula
  64. College Physics

    It takes 164 kJ of work to accelerate a car from 23.7 m/s to 27.8 m/s. What is the car's mass? I tried using this equation but it didn't work KE = 1/2mv^2

    asked by Anonymous
  65. Math

    Suppose that z is inversely proportional to y and that z=12 when y=16. Write an equation that expresses z in terms of y.

    asked by Anastasia
  66. Chemistry

    Assume you begin with 60 g of water at 20 oC and 60 g of water at 80 oC. After adding the two portions of water into your calorimeter, you determine the temperature of the mixed portions of water to be 45 oC. What is the heat capacity of the calorimeter?

    asked by Alex
  67. political science

    which of the following terms describe America's fundamental political values? a) internationalist & isolationiat b) inedpendent & moderate c) Republican & Democrat d) liberal & conservative e) liberty, equality & democracy

    asked by tina
  68. Chem AP help!

    A zinc-copper battery is constructed as follows at 25°C: Zn | Zn2+(0.15 M) || Cu2+(1.70 M) | Cu The mass of each electrode is 150. g. The cell potential when the cell is first attached is 1.13V How long can this battery deliver a current of 5.00 A before

    asked by Daya
  69. algergra

    determine the amount of an inverstment if 400.00 is invested at an interest rate 7.25% compounded quarterly for 7 years

    asked by Anonymous
  70. Physics

    A 15 kg uniform disk of radius R = 0.25 m has a string wrapped around it, and a m = 3.3 kg weight is hanging on the string. The system of the weight and disk is released from rest. When the 3.3 kg weight is moving with a speed of 2.1 m/s, what is the

    asked by Emma
  71. physics

    The mass of a regulation tennis ball is 62.0 (although it can vary slightly), and tests have shown that the ball is in contact with the tennis racket for 34.0 . (This number can also vary, depending on the racket and swing.) We shall assume a 34.0 contact

    asked by Jodi
  72. physic

    Tarzan plans to cross a gorge by swinging in an arc from a hanging vine. If his arms are capable of exerting a force of 1820 N on the rope, what is the maximum speed (in meters/second) he can tolerate at the lowest point of his swing? His mass is 83.0 kg,

    asked by vickie
  73. Physics

    A athlete in good physical condition can land on the ground at a speed of 12m/s without injury , calculate the max height from which the athlete can jump without injury, assuming the takeoff speed is zero

    asked by Melissa
  74. Science

    The line spectra of two elements are not identical because- (A)The element do not have the same number of neutrons (B)They have different mass numbers (C)Their outermost electrons are at different energy levels (D)They have different valencies

    asked by Poonam
  75. chemistry

    what are the solute particles present in boric acid (H3BO3)?

    asked by jade
  76. math

    in a recent poll of city voters it was found that 90% liked the view of the city skyline.find the probability that exactly 2 voters in a sample of 5 voters will like the viewof the city skyline.

    asked by crystal
  77. Econ

    How does the aggregate goods and services market differ from the regular (microeconomic) supply and demand market? In other words, how does aggregate demand and aggregate demand differ from normal supply and demand? Address the measures of price, quantity,

    asked by Lisa
  78. physics

    A car (mass=1100kg) is traveling at 32m/s when it collides head on with a sport utility vehicle (mass=2500kg) traveling in the opposite direction. In the collision, the two vehicles come to a halt. at what speed was the sport utility vehicle traveling.

    asked by Natasha
  79. Chemistry

    you add excess sodium sulfate to a solution of a soluble barium compound in order to precipitate all of the barium ion as barium sulfate, BaSO4. Suppose a 458 mg sample of the barium compound is dissolved to create the solution. Then when the sodium is

    asked by India
  80. Finance

    Firm A has $10,000 in assets entirely financed with equity. Firm B also has $10,000 in assets, but these assets are financed by $5,000 in debt (with a 10 percent rate of interest) and $5,000 in equity. Both firms sell 10,000 units of output at $2.50 per

    asked by John
  81. Algebra

    The area of a circle is given by the formula A+pier^2, where r is the radius. If increasing the radius of a circle by 1 inch gives the resulting circle an area of 100pie square inches, what is the radius of the original circle?

    asked by Savannah
  82. english 10

    Writing under the name of Diedrich Knickerbocker Washington Irving aimed his potent satire at as diverse topics as political rivals such as Thomas Jefferson to the very ideal of looking back on the past affectionately: A fine lady, in those times, waddled

    asked by Anonymous
  83. human resources

    A truck costing $25,000 with a residual value of $5,000 was purchsed by Rim Corporation. The truck's estimated life is 10 years. At the end of Year 2,what is the book value using declining-balance method? assume a depreciation rate of twice the

    asked by shawn
  84. physics

    a series RLC circuit has a peak current of 4 A with a frequency of 23 kHz. if the resistance of the circuit is 60 kohm, the capacitance of the circuit is 16 uF, and the unductance of the circuit is 24 uH, determine the average power of the circuit.

    asked by fatih
  85. Math

    A city of 2,950,000 people has a 2.5% annual decrease in population. Determine the city's population after 4 years.

    asked by Julie
  86. Chemistry

    Why are molten metal chlorides used as electrolytes rather than using other molten salts? Thanks for ur helps alot.

    asked by Chemo
  87. physics

    On a wet racetrack, the maximum safe speed, to avoid sliding on a level circular curve with a radius of curvature of 56 m, is 73 km/hr. What is the coefficient of friction between the car's tires and the track surface?

    asked by jeff
  88. physics

    for an RLC circuit with a resistance of 11 k*ohm, a capacitance of 2 uF, and an inductance of 24 H, what frequency is needed to minimize the impedance?

    asked by fatih
  89. AP Chemistry

    A buffer, consisting of H2PO4− and HPO42−, helps control the pH of physiological fluids. Many carbonated soft drinks also use this buffer system. What is the pH of a soft drink in which the major buffer ingredients are 7.20 g of NaH2PO4 and 4.90 g of

    asked by HELP PLEASE
  90. Science

    Describe a hybrid plasmid. What is this?

    asked by Justin
  91. Math

    Prove the theorem that if limx¡úd h(x)= P and limx¡úd k(x) = Q and h(x) ¡Ý k(x) for all x in an open interval containing d, then P ¡Ý Q by using the formal definition of the limit, showing all work.

    asked by Buster
  92. Physics

    What is the maximum equipment needed to determine the power dissipated in a resistor of unknown value? 1) a voltmeter, only 2) An ammeter only, 3) a voltmeter and an ammeter only 4) a voltmeter, an ammeter, and a stopwatch

    asked by Thomas
  93. Chemistry

    Explain why electrolytic reduction rather than chemical reduction is often used to obtain active metals from their compounds.

    asked by Chemo
  94. physics

    a series RLC circuit has a peak current of 1 A with a frequency of 54 kHz. if the resistance of the circuit is 51 kHz, the capacitance of the circuit is 19 uF and the inductance of the circuit is 25 uF, determine the average power of the circuit.

    asked by fatih
  95. statistics

    in an effort to increase production of an automobile part, the factory manager decides to play music in the manufacturing area. Eight workers are selected, and the number if items each produced for a specfic day is recored. After one week of music, the

    asked by western international university
  96. chemistry

    For the ionization of phenylacetic acid, Hc8H7O2 +H20 C8H7O2- (aq) + H3o+ (aq) Ka + 4.9x10^-5 What is the concentration of the phenylacetic ion, C8H702,- in 0.186 M phenylacetic acid, HC8H702?

    asked by anonymous
  97. Science

    Why does water have more surface tension than methylated spirits?

    asked by Mee
  98. biology

    how can nanobots be used to fight the common cold?

    asked by kally
  99. Science

    Two thin strings supported a 200g metre ruler 20cm and 30cm from both ends. Calculate the tension in each string.

    asked by Constance shapela
  100. biology

    briefly describe the basic characteristics that all living things on earth have in common

    asked by Abigayle
  101. chemistry

    Using this data, 2 NO(g) + Cl2(g) == 2 NOCl(g) Kc = 3.20 X 10-3 NO2(g) == NO(g) + ½ O2(g) Kc = 3.93 calculate a value for Kc for the reaction, NOCl (g) + ½ O2 (g) == NO2 (g) + ½ Cl2 (g) A. 20.2 B. 2.06 X 10-4 C. 4.49 D. 4.84 X 10-3 E. 0.223 eliminated

    asked by bob
  102. maths

    Suppose scores on an IQ test are normally distributed.If the test has mean of 100 and standard deviation of 10,what is the probability that a person who takes the test will score between 90 and 110?

    asked by boby
  103. Physics

    HELP! A tennis ball is attached to a .8m long string whirled around in a circle with a constant frequency of 1.2 Hz. What is the linear(tangential) velocity of the tennis ball?

    asked by Phil
  104. calculas

    Consider a cooling cup of coffee whose initial temperature is 205°. The room temperature is held at 70°. Suppose k = 1/16. Let y be the temperature, and y' its time derivative. ----------------------------------- I have the differential equation: y' =

    asked by pasta!
  105. Government

    The most powerful position in the White House Office is usually the _____. 1.)chief of staff 2.)press secretary 3.)White House counsel My answer4.)attorney general

    asked by Paige
  106. physic

    How far (in meters) above the earth's surface will the acceleration of gravity be 27.0 % of what it is on the surface?

    asked by coleman
  107. Chemistry

    h2c4h4o4 + 2naoh --> 2h2o + na2c4h4o4 as for the previous question im sorry i forgot to plug the maleic acid in the formula properly. so this ones it ^ .2213 of c4h4o4 used (maleic acid) and .1 M NaOH 1. show the equation for 1st and 2nd ionization 2. find

    asked by Ruby
  108. english (from language to litrature)

    give examples of of litrary and non-lirary prose by citing examples from any source of your choise in 350 words (you may qoute the source

    asked by dharmendra
  109. Calculus

    Fnet= F1+F2+F3, F1=40N with bearing of 90' , F2=25N with bearing of 30' ,and F3= 12N with bearing of 290' what is the magnitude and direction ....using VECTOR COMPONENTS....

    asked by Tarkan
  110. math

    Compare the numbers. Write >,

    asked by Gabby ( 5 grade)
  111. CALCULUS PLEASE HELP!

    If f(x)=1.7x^5-5.3x^2+9.8 and if r is the only real number such that f(r)=0, then r is between a. -1.4 and -1.3 b. -1.3 and -1.2 c. -1.2 and -1.1 d. -1.1 and 0 e. -1.0 and -0.9

    asked by Anonymous
  112. math

    A two digit number is such that two times the tens digit is three less than thrice the units digit and four times the number is 99 greater than the number obtained by reversing the digits. Find the number.

    asked by lekan
  113. Physics

    A 1100-kg car is being driven up a 4.0° hill. The frictional force is directed opposite to the motion of the car and has a magnitude of f = 518 N. A force is applied to the car by the road and propels the car forward. In addition to these two forces, two

    asked by Natasha
  114. Math word problem

    In a pet store the number of dogs is 11 more than 3 times the number of cats. If the pet store has 21 dogs. How many cars does it have? Question 2. In the pet store the number of birds is 10 less than twice the number of rabbits. If the pet store. Had 56.

    asked by Marko
  115. physics

    a series RLC circuit has a peak current of 4 A with a frequency of 23 kHz. if the resistance of the circuit is 60 kohm, the capacitance of the circuit is 16 uF, and the unductance of the circuit is 24 uH, determine the average power of the circuit. Include

    asked by fatih
  116. trig

    solve the equation 2 tan C-3=3 tan X-4 algebraically for all values of C in the interval odegrees lessthan or equal C lessthan360 degrees.

    asked by Anonymous
  117. English 1

    1.Writers often communicate their themes by building clues into the story. Choose one story from Collection 4 and show how the author uses characterization, title choice, and key passages to develop the theme of the story. Use examples from the story,

    asked by Ella
  118. Trig-Algebra help asap

    A regular pentagon is inscribed in a circle whose radius measures 7 cm. Find the area of the pentagon.

    asked by Missy
  119. physics

    Two identical planets, each of mass M, have their centers a distance D apart. Halfway between them, at gravitational equilibrium, lies a satellite of mass m. The satellite is then displaced a small distance and released, after which it undergoes SHM. a) In

    asked by sand
  120. math

    The length of time that it takes for a pendulum to make one complete swing depends on the length of the pendulum. The time in seconds, T, is related to the length in metres, L, through the equation T=2π√ L/9.8 Write this equation in function notation.

    asked by james
  121. math

    A farmer is planting a row of corn. Each plant is 3 feet apart. If he is planting 23 how far apart is the first and last plant?

    asked by Anonymous
  122. physics

    a series RLC circuit has a peak current of 4 A with a frequency of 23 kHz. if the resistance of the circuit is 60 kohm, the capacitance of the circuit is 16 uF, and the unductance of the circuit is 24 uH, determine the average power of the circuit. Include

    asked by fatih
  123. Chemistry

    The explosive residue contains carbon, hydrogen and nitrogen where the percentage of nitrogen is high, calculate it from 0.5g of residue which eliminates ammonia gas on reaction with sodium hydroxide, and absorb by 50mL of Nby10 H2SO4. Unused acid is

    asked by Farah
  124. Calculus

    Fnet= F1+F2+F3, F1=40N with bearing of 90' , F2=25N with bearing of 30' ,and F3= 12N with bearing of 290' what is the magnitude and direction ....using VECTOR COMPONENTS....

    asked by Tarkan
  125. chemistry

    The urine excreted by an adult patient over 24 hours was collected and diluted to give 2.000L sample. at ph 10 EDTA FORMS 1:1 COMPLEX WITH BOTH Mg2+ and Ca2+ and after buffering at this pH a 10mL aliquot of the sample required 26.81mL of 0.003474M EDTA for

    asked by TOM
  126. Chemistry

    What are the abbreviation representation for scientific calories, food calories and SI units of energy?

    asked by CeliaWalker
  127. physics

    . Compared a car (mass of 2000 kg) moving at 10 miles per hour, how much kinetic energy (in Joules) does that same car have when it moves at 20 miles per hour? At 50 miles per hour? 75 miles per hour?

    asked by Hector
  128. chem

    CF4 how would you determine the molecular shape using vsepr? i got that it has 32 electrons and four bonds. im stuck on how to get the non bonding domains and shape and bond angle! thanks!

    asked by skye
  129. basic math

    In one class, there are 15 boys and 30 girls. Approximately what percentage of the students in the class are boys?

    asked by strawberry caca
  130. Accounting

    Identify internal control principles. (SO 2), C The internal control procedures in Phillips Company make the following provisions. Identify the principles of internal control that are being followed in each case. a. Employees who have physical custody of

    asked by Jaymes
  131. algebra

    algebraic expression for one-fourth of the sum of a number and five

    asked by Anonymous
  132. Trig-Algebra help asap

    A regular octagon is inscribed in a circle with a radius of 5 cm. Find the area of the octagon.

    asked by Missy
  133. World geography

    Imagine you are a farmer in an area that has monsoons. What would you need to do to adjust your crops or your farming techniques to account for this massive rainfall? How can you protect your crops during the dry winter months?

    asked by Pam
  134. physics

    The drawing shows a copper wire (negligible resistance) bentinto a circular shape with a radius of 0.48 m. The radial sectionBC is fixed in place, while the copper bar ACsweeps around at an angular speed of 16 rad/s. The bar makeselectrical contact with

    asked by Daniel
  135. Math 12A

    A rectangular building is to be built on a lot measuring 46m by 30m. The building will be surrounded by a strip of lawn of uniform width. if the lawn takes up 30% of the lot, how wide will the lawn be? Need you help

    asked by I
  136. MATH

    Word problem mark and melinda collect baseball caps. mark has 7 more than melinda. togheter they have 115 caps. how many baseball caps does each of them have? i got: melinda has 54 mark has 61 is that right? i have 2 more i cant figure out: 1) in a pet

    asked by marko
  137. geometry

    how many 8' tiles are needed to tile a 8' by 18' floor? how much money will it cost if tiles are $2.75 each?

    asked by Khalia
  138. statistics

    The Sledge Tire and Rubber Company plans to warranty its new mountain bike tire for 12 months. However, before it does this, the company wants to be sure that the mean lifetime of the tires is at least 18 months under normal operations. It will put the

    asked by nouah
  139. physics

    John Johnson set a world record for the "100.0" m run with a time of 9.86 s. If, after crossing the finish line, John walked directly back to his starting point in 90.9 s, what is the magnitude of his average velocity for the 200.0m?

    asked by rachel
  140. chemistry

    Using this data, 2 NO(g) + Cl2(g) == 2 NOCl(g) Kc = 3.20 X 10-3 NO2(g) == NO(g) + ½ O2(g) Kc = 3.93 calculate a value for Kc for the reaction, NOCl (g) + ½ O2 (g) == NO2 (g) + ½ Cl2 (g) A. 20.2 B. 2.06 X 10-4 C. 4.49 D. 4.84 X 10-3 E. 0.223 eliminated

    asked by bob
  141. statistics

    if the mean of a test score is 30 and the standard deviation is 3.7. which score could be expected to occur the least often?

    asked by Anonymous
  142. math

    Relationship 1: Relationship 2: y = x a) Identify each relationship as direct or inverse variation. b) Calculate the constant of each relationship and explain how you arrived at your answer. c) Using complete sentences, explain how the two relationships

    asked by Lorna
  143. Math

    In which one of the following sentences is the number written correctly? A. One-hundred and thirty-two people lined up to buy the tickets B. John just paid $33 thousand for his new car C. The parcel of land was advetised a two hundred forty-three and three

    asked by Brenna
  144. physics

    A child moves with a speed of 5.40 m/s when positioned 14.0 m from the center of a merry-go-round. Calculate the net force (in newtons) exerted on the child, whose mass is 26.0 kg.

    asked by bob
  145. 4th grade math

    what is 5/6 of 288

    asked by zoe
  146. Math

    If a food item weighs 120 grams and its composed of 77 grams of carbhydrates, 19 grams of fat, and 24 grams of protein, what is its total calorie count? Carbs and protein each provide each provide 4 calories per gram and fats provide 9. Thanks for all who

    asked by Dee
  147. chemistry

    Using this data, 2 NO(g) + Cl2(g) == 2 NOCl(g) Kc = 3.20 X 10-3 NO2(g) == NO(g) + ½ O2(g) Kc = 3.93 calculate a value for Kc for the reaction, NOCl (g) + ½ O2 (g) == NO2 (g) + ½ Cl2 (g) A. 20.2 B. 2.06 X 10-4 C. 4.49 D. 4.84 X 10-3 E. 0.223 eliminated

    asked by bob
  148. Math

    A sweater. Cost. $12 more than a shirt. Together they cost. $46. What was the price of the shirt? I Got. : shirt was $17. Is that right? The perimeter. Of a rectangle. Is 84cm The length is twice the width. Find the length and width. I got. Length 24cm

    asked by Marko
  149. math

    kanye spelled 23 out of 25 words correctly on this test. write the percent of words he spelled correctly as a percent, a fraction, and a decimal.

    asked by chANEL Joseph
  150. physics

    a student driving a car travels 10.0 km in 30,0 min.What was her average speed?

    asked by tema
  151. Calculus

    Fnet= F1+F2+F3, F1=40N with bearing of 90' , F2=25N with bearing of 30' ,and F3= 12N with bearing of 290' what is the magnitude and direction ....using VECTOR COMPONENTS....

    asked by Tarkan
  152. anatomy

    I have 2 problems/questions I am unsure of the answers. The first one is "how would you demonstrate the Valsalve maneuver using the model lung?" and 2. If a woman is breathing rapidly and deeply after exercise, would TLC, RV, TV, IRV, and ERV stay the

    asked by Mary
  153. math word problems

    lydi sold 4/5 of her candles to raise money for the band. she has 8 candles left. how many candles did lydia start with? a coin purse contains quarters, dimes, and nickes. there are the same number of dimes as nickesl and half as many quarters as dimes.

    asked by marko
  154. ACC 290

    How would I record the following transactions into a "T" account? This information relates to Pickert Real Estate Agency. Oct. 1 Stockholders invest $30,000 in exchange for common stock of the corporation. 2 Hires an administrative assistant at an annual

    asked by Ashley
  155. Maths

    The first term of the geometric sequance is 27,the last term is 8 and the sum of the series is 65.how many terms are there in the series?

    asked by Naledi obotseng
  156. chemistry

    If 75.0 grams of water is decomposed into hydrogen and oxygen, how many grams of oxygen should be formed?

    asked by Anonymous
  157. Trig-Algebra help asap

    A rhombus has sides of 5 cm and one diagonal is 6 cm long. Find the area of the rhombus.

    asked by Missy
  158. Chemistry

    A student has 100.0 mL of an unknown solution of Vitamin C. She removes 1.00 mL of this solution, dilutes it to 50.0 mL, and titrates this second solution with an iodine solution solution that 8.5x1^-4 M. 6.60 mL of iodine solution is required to reach the

    asked by Cassandra
  159. Chemistry

    A student has 100.0 mL of an unknown solution of Vitamin C. She removes 1.00 mL of this solution, dilutes it to 50.0 mL, and titrates this second solution with an iodine solution solution that 8.5x1^-4 M. 6.60 mL of iodine solution is required to reach the

    asked by Cassandra
  160. Government

    Which is not a subunit of the Department of Health and Human Services? 1.)The Food and Drug Administration My answer2.)The Bureau of Indian Affairs 3.)The National Institutes of Health 4.)The Centers for Disease Control

    asked by Paige
  161. physics

    John Johnson set a world record for the "100.0" m run with a time of 9.86 s. If, after crossing the finish line, John walked directly back to his starting point in 90.9 s, what is the magnitude of his average velocity for the 200.0m?

    asked by rachel
  162. statistics

    Fit a regression line = a+bXi by the method of Least squares to the given sample information. Observations 1 2 3 4 5 6 7 8 9 10 Income (X)(’00 Rs) Consumption Expenditure(Y)(’00 Rs) 10 44 5 60 25 39 37 51 96 80 94 70 110 80 30 30 79 50 65 40

    asked by Anonymous
  163. chemisty

    how do you convert 50 microliters of 2 butanol to moles?

    asked by jessica
  164. geometry

    how many 8' tiles are needed to tile a 8' by 18' floor? how much money will it cost if tiles are $2.75 each?

    asked by Khalia
  165. chemistry

    A gas is heated from 256 K to 287 K while its volume is increased from 20.0 L to 30.0 L by moving a large piston within a cylinder. If the original pressure was 1.16 atm, what would be the final pressure?

    asked by jamella
  166. Math

    If 5 times a number is increased by 5, the result is 30. find the number.

    asked by Anthony
  167. math

    After school, Chase spends 20 min reading, 30 min practicing the piano, 15 min cleaning his room, and 40 min doing his homework. Chase is busy for 105 min.What fraction of the time does he spends cleaning his room?

    asked by Sam
  168. physics

    An ion enters a mass spectrometer which has a .18 T field perpendicular to? an electric field of 1.6 kV/m and selects a velocity. the same magnetic field is then used to deflect the singly charged ion into a circular path of radius 12.5 cm. a. what

    asked by fatih
  169. Math

    Ok so I have this word problem that I can't figure out. Help please!! Sandra is trying to use her old cell phone to call her best friend. She can be no more than 3 miles from a tower in order to get a signal for her phone. If the telephone tower is 252

    asked by Emma
  170. physics

    the current to an LC circuit is being supplied according to the function I(t)=2*sin(7t). what is the smallest value of t for which the inductor and capacitor each contain half of the energy?

    asked by fatih
  171. chemistry

    If 75.0 grams of water is decomposed into hydrogen and oxygen, how many grams of hydrogen should be formed?

    asked by stoi.
  172. chemistry

    The decomposition of water described in question 1 was performed. In this experiment 20.0 grams of oxygen was produced. What is the percent yield?

    asked by stoi.
  173. 4th grade math

    what is 5/6 of 288

    asked by zoe
  174. English 1 Literature

    I understand what the question is asking for but I do not know exactly how to write it. Here is the question. The way a story is told and the voice that tells it are important parts of a story. Choose at least two stories from Collection 3. Analyze the

    asked by Ella
  175. math

    Mr. Tip is working on the marching band's halftime show. During the first song, rows have 9 musicians each. During the second song, rows change to contain 6 musicians each. If there are a total of 252 musicians in the marching band, how many rows will

    asked by Anonymous
  176. Math

    x^3-6x^2+17x Find the point of inflection of the graph of the function? x,y ( , ) I tried to solve for it by getting the 1st derivative and setting it equal to 0 but i get sqrt,so am confused!

    asked by Angelina
  177. Chemistry

    A student has 100.0 mL of an unknown solution of Vitamin C. She removes 1.00 mL of this solution, dilutes it to 50.0 mL, and titrates this second solution with an iodine solution that is 8.5 × 10-4 M. 6.60 mL of iodine solution is required to reach the

    asked by Shelley
  178. Chemistry help PLEASE!!

    For a solution that is 0.168 M NH3 and 0.104 M NH4Cl calculate the following.? [OH-] [NH4+] [Cl-] [H3O+] How would you do this :-/

    asked by Anonymous
  179. Health/ Math

    A healthy amount of body for young men is 8 to 20 percent of body weight. Calculate the range of body fat, in pounds, for a young man who weighs 150 pounds and for a young man who weighs 185 pounds.

    asked by Dee
  180. English

    Please help me begin a story with these words. 1.exemplary-- (adj) outstanding, an example to others 2.extenuating-- (adj) excusing, lessening the seriousness of guilt or crime, e.g., of mitigating factors 3.florid-- (adj) red-colored, flushed; gaudy,

    asked by Leslie
  181. math geometry

    if a figure has five equilateral triangles and one pentagon, and the pentagon is 90 cm, what is the perimeter of the whole figure

    asked by chandan
  182. algebra

    A rectangular hole 2 centimeters wide and x centimeters long is cut in a rectangular sheet of metal 5 centimeters wide and y centimeters long.

    asked by Anonymous
  183. math

    A cube of side length of 11cm and a mass of 2000g has what density?

    asked by cat
  184. math

    is 2x - 5 = 5 = 7x = 3 a linear equation

    asked by mary
  185. 3 grade english ms sue

    PREFIXES prepaid,midnight,overflow,outdoors,outline,overgrown,perfix,midwest,pretest,midpoint,outgoing,overtime,overdue,outside,outfield context clues - sue made a list of phrases about her best friend. write a list word to complete each phrase. 1-

    asked by dw
  186. Physics

    Lake Erie contains about 4.8 x 10^17 grams of fresh water. Assume that the lake has frozen solid and that the ice starts off at -3 C. How much energy would the lake need to absorb from the Sun to cause it to evaporate completely? Each gram of water will

    asked by Tracy
  187. Physics

    What is the magnitude of buoyant froce acting on a 720 cm^3 toy submarine foating in fresh water? (d water=1 g/cm^3)

    asked by Tracy
  188. math

    A locker combination has three nonzero digits, and digits cannot be repeated. If the first digit is odd, what is the probability that the second digit is even?

    asked by anonymus
  189. geometry

    If a car requires 10 Liters of gas to drive 100 kilometers, how many gallons would be required to drive one mile?

    asked by Khalia
  190. physics

    A space probe is traveling in outer space with a momentum that has a magnitude of 7.5e7 Kg*m/s. A retrorocket is fired to slow down the probe. It applies a force to the probe that has a magnitude of 2.0e6N and a direction opposite to the probe's motion. It

    asked by Natasha
  191. Physics

    Lake Erie contains about 4.8 x 10^17 grams of fresh water. Assume that the lake has frozen solid and that the ice starts off at -3 C. How much energy would the lake need to absorb from the Sun to cause it to evaporate completely? Each gram of water will

    asked by Tracy
  192. Math 7th Grade

    A car cost $65 per day to rent plus $.35 per mile. Joe rents car for 1 day and drives 115 miles. what is the equation and the solution. The solution is pretty simple $65 + .35x115 = 105.25 I can't figure out the equation.

    asked by Chris
  193. 1st grade same sound

    which one of the 3 words has the same sound as boat? sol slow do

    asked by Mary
  194. Chemistry

    So I thought i finally had figured out how to balance these equations but now this one with the formula in it has confused me again. Can you help with the next steps in balancing this equation? Maybe if I can get the answer to this one I can complete my

    asked by Susan
  195. Math

    Say that a bag contains 100 marbles: 30 red, 30 blue, 30 green, plus a mix of 10 yellow and orange marbles. To be certain that you have 10 marbles of the same color, what is the minimum number you would need to remove (without looking) from the bag?

    asked by Cyndie
  196. Spanish-Plase check

    I had to make some negative sentences. Please check Thank you No tengo nada que hacer. No bebo nunca el batido. No bailo nunca. No hablo nunca francés. Tampoco hablo el alemán No compro ninguno. No quiero comer nada No quiero nunca contestar en la clase.

    asked by Tiffany
  197. principle of management

    Fernando, a manager in a retail store, is changing the work schedule of his long-term employees for the holiday season. He is using the same basic schedule as he did last year. Fernando should expect that his employees will be: A) terribly upset and quit

    asked by vedrana
  198. Statistics

    Quick question, can an obtained value be negative?

    asked by Mm
  199. math

    the museum charges $20 dollars for two people. and 28 for three people what is the equation that realtes the number of people in a group and the cost to enter a museum? write it in slope intercept form

    asked by bogalusa high
  200. Algebra II

    Please help me solve this rational function, my teacher did not give us notes and the book is confusing me :/ Thank You! y/5+y/2=7

    asked by Gaby
  201. calc

    f(x)=[5x^3-4x^2-8x+9]/[2x^2-1x-3] Find the equation of the non-vertical asymptote. y = Does f(x) intersect its non-vertical asymptote? (yes or no) What is the smallest value of x at which f(x) intersects its non-vertical asymptote? ( Enter No in the

    asked by jasmineT
  202. calc

    f(x)=[5x^3-4x^2-8x+9]/[2x^2-1x-3] Find the equation of the non-vertical asymptote. y = Does f(x) intersect its non-vertical asymptote? (yes or no) What is the smallest value of x at which f(x) intersects its non-vertical asymptote? ( Enter No in the

    asked by jasmineT
  203. physics

    A simple pendulum has a mass m and carries a charge q. The pendulum is suspended between the vertical plates of a capacitor of separation distance d. If the string of the pendulum makes an angle θ with the vertical, what is the potential difference

    asked by David
  204. Sciece

    Drought, flood and/or bushfire effects on the Red Wattle bird. Please help this part is in my assignment and its due tomorow!

    asked by Jackson
  205. Political Science

    Based on Bryan Caplan's book, The Myth of the Rational Voter: Offer your own opinion, and critical analysis, to Caplan’s argument about “rational irrationality.” What are the implications about Caplan’s story for American democracy? Do you agree

    asked by Kevin
  206. english ( need proofread)

    1. I learned that soil take crucial role in growing plants. If the soil is healthy, any plant will grew well on that soil. The plant will have a better quality, better flavor, and better nutritional values. 2. People buy food that is cheap and convenient.

    asked by ESLstudent
  207. CRJ 201

    Jacobson v. United States case regarding entrapment. Need some veiws opinion towards the outcome of this case.

    asked by Anonymous
  208. math

    Adrian said that any 2 digit number with 2 identical,digits is divisible by 11. Do you agree? Explain.

    asked by Ray
  209. English

    Ms Sue, can you please check these two sentences, I need to include in an email? Thank you. 1) Sorry, for disturbing you. We have received email (emails) from four of your students, namely ..... 2) Could you please let me have your list of students before

    asked by Henry
  210. Chemistry

    The final temperature of a material was 315K and delta T was 15 degrees. What the initial temperature be if the material is being cooled... and also initial temperature if the material is being heat? Please and Thank you.

    asked by CeliaWalker
  211. chem

    what mass of nitrogen can be obtained from a 400.0g sample of potassium nitrate?

    asked by kalina
  212. Physics

    A cylinder contains 0.1 cubic meters of gas at atmospheric pressure. This gas is allowed to expand until its pressure drops to 7800 Pa. What is the gas volume after this expansion has taken place? Is this answer right: 7800/10130 = 0.770

    asked by Tracy
  213. chemistry

    how can you find the amount of moles of 50 microliters of 18M H2SO4?

    asked by coleman
  214. Math

    imaginary numbers Find the reciprocal of 2-7i and express it in terms of a+bi I need help please and thank you

    asked by Anonymous
  215. Science

    What is the total braking distance for a car that is going 60km/h on wet road (0.10)? The drivers reaction time is 1.5 seconds.

    asked by Alyssa
  216. Algebra

    In 2004, about 233 million people in the US were aged 14 or older. They consumed, on average, 2.23 gallons of alcohol per person. Use scientific notation to estimate the total number of gallons of alcohol consumed by this age group. What is the formula for

    asked by Anonymous
  217. math

    on a plan of a rectangular garden the length is 12cm and the width is 9cm. the actual length of the garden is 8 yards. what is the actual width?

    asked by kourtney
  218. Chemistry

    Hi, I am trying to figure out how to calculate the average temperature of 2 different chemical solutions based upon the temperatures I measured. The question states: Find the average Ti of HCl & NaOH solutions. The Ti of NaOH solution is: 20.87 C The Ti of

    asked by Jules
  219. Hostory / Social Studies

    How Was Big Business Affected By War Mobilization ?

    asked by Remy
  220. Calculus (Intermediate Value Theorem)

    If f(x)= x^3-x+3 and if c is the only real number such that f(c)=0, then c is between ______?

    asked by Student
  221. Chemistry

    Kp=1.6 Kp=1.0*10^-4 A2B Find the equilibrium partial pressures of A and B B=1.0 atm A=0.0 atm This is what I have so far A 2B 0 1.0 +p -p p 1-p [B]^2/A (1-p)^2/p = 1.6 then got a quadratic equation of p^2+1.6p-1 to get x=.48

    asked by maura
  222. math

    I need numbers flashcards from 13 to 61

    asked by Anonymous
  223. Math

    6ab + 4bc - 3bc + bc

    asked by Nick
  224. Life oriention

    Name and explain 3 checks and balances that are in place in SOUTH AFRICA that control and regulate media

    asked by Harrison
  225. physics

    What is the maximum speed (in meters/second) with which a 1300 kg car can round a turn of radius 700 m on a flat road, if the coefficent of friction between tires and road is 0.530

    asked by jessica
  226. math

    if a business borrows $16,000 and repays $25,800 in 5 years, what is the simple interest rate

    asked by Anonymous
  227. chemistry

    If 20.0 grams of hydrogen and 40.0 grams of nitrigen are combined to form nitrogen trihidride, how many grams of nitrogen trihydride should be formed?

    asked by stoi.
  228. Math

    Write an inequality for the expression fourteen more than a number is at least 9. a. f+14†9 b. 14f†9 c. f+9†14 d. f-14†9

    asked by Jon
  229. Algebra

    A model scale of an addition shows 12cm wide base and rises to 15cm. Actual base will be 120 ft. What will the height of the addition be?

    asked by Jus
  230. science

    Are the following substances acid, base, or neutral: sodium bicarbonate (pH = 8.3): Blood (pH = 7.4): milk (pH =6.7): orange juice (pH = 3.6): milk of magnesia (pH = 10.5): How do you come up with the answers?

    asked by long
  231. Science

    Drought, flood and/or bushfire effects on the Red Wattle bird. Please help this part is in my assignment and its due tomorow!

    asked by Jackson
  232. math

    there are 5 green, 3 red ,8 yellow, and 3 black marbles in a box. How many marbles does John need to draw before he is absolutely sure he has at least one red marble?

    asked by dinah
  233. math

    a piano has 88 keys.show with numbers the probability of hitting a particular key if you shut your eyes and strike a key.

    asked by gabriel
  234. stats

    three cards are drawn from a deckof playing cards.Find the probability that the firstcard is red,the second cardis a black king,and the third card is a black king.

    asked by crystal
  235. pre algabra

    mark is making a scale drawing of his house.the width of his house is 40 feet.marks room is 10 feet wide by 17 and a half feet long in mark first drawing the width of his house (40feet) is represented by 8 inches what would the dimensions of his room in

    asked by Anonymous
  236. Math

    Solve: (don't forget about imaginary numbers) 5x^2-7x+12=0 how do I solve this? please help and thank you

    asked by Anonymous
  237. Physics

    two 10.0L buckets of hot water at 65 degrees celsius are mixed with one 10.0L bucket of cold water at 18 degrees celsius. calcualte the final equilibrium temperature after mixing, assuming no thermal energy loss to the environment.

    asked by Parsa
  238. calculus

    The efficiency of an internal combustion engine is given by E= (1-v/V)^0.4 Where V and v are the respective maximum and minimum volumes of air in each cylinder. a) Show that ∂E/ ∂V > 0 and interpret your result b) Show that ∂E/ ∂v < 0 and interpret

    asked by wei
  239. math

    three(3) cards are drawn from a deck of playing cards.find the probability that the first card is red,the second card is a black king,and the third card is a black king

    asked by crystal
  240. trig

    verify the identity algebraically- (5-5 cos x)(5+5 cos x)=25 (sin^x)

    asked by cam
  241. biology

    what are the advantages for using nanotechnology?

    asked by kally
  242. science

    do your results support idea that trophic cascades occur in nature?

    asked by gloria
  243. math

    THE EXPRESSION:553.7X+27,966 CAN BE USED TO APPROXIMATE THE AVERAGE ANNUAL SALARY IN DOLLARS OF PUBLIC SCHOOL TEACHER IN THE YEAR 1985+X 1. WHAT WAS THE AVERAGE TEACHERS SALARY IN DOLLARS OF PUBLIC SCHOOL TEACHER IN 1993? 2. IN WHICH YEAR WILL THE AVERAGE

    asked by KEKE
  244. Math

    Simplify -9^2 Negative nine squared

    asked by Anthony
  245. trig

    5sin(2x)+4cos(x)=0

    asked by john
  246. Physics

    A spring and block is set up on frictionless tabletop. The 30N/m spring is compressed 16 centimeters and released. What is the maximum speed the 2.0 kilogram block will reach?

    asked by Tracy
  247. English

    I urgenlty need to know which alternatives are possible. I know the first is correct. Thank you. 1) The doctor put a cast on my ankle/ The doctor casted my anke. I had to keep/have/ a cast for a month. 2) Why don't you take some bicarb to help your

    asked by Henry
  248. geometry

    Liza used a cardboard cube as part of an art project. The cube has a volume of 729 square inches. Which cube might she use. one with 4inches in length, 9 inches, 10 inches, or 7 inches

    asked by max
  249. English ms. sue

    ms. sue i do characterization on narrator, i not get what be physical traits that be how she look like? cause they have to be different from personality traits.

    asked by Mohammad
  250. science

    based on your knowledge of environmentalscience, what could explainthese observation? Support your answer with specific results from your data and ideas fromyour readings

    asked by gloria
  251. math

    first estimate answer then find exact answer simplify if possible 9 1/5*30

    asked by Anonymous
  252. Math

    find the value of the expression. 3x45/9-2(10-6)-4/2

    asked by Anthony
  253. math

    Having difficulty with the four frequency ,to use in a table and determine and find the range ..im not understanding whays needed ?

    asked by david
  254. physics

    an LC circuit with a 3 uF capacitor and a 3 H inductor has a current I(t)=10*sin(2t) supplied to it . after 2 s, how much charge is stored on a plate of the capacitor?

    asked by fatih
  255. english

    i need proof reading with my work if i did any mistake. thanks 1. I learned that soil take crucial role in growing plants. If the soil is healthy, any plant will grew well on that soil. The plant will have a better quality, better flavor, and better

    asked by ESLstudent
  256. math

    Solve: (don't forget about imaginary numbers) 5x^2-7x+12=0 how do I solve this? do I need to use the quadratic formula? please help and thank you

    asked by Anonymous
  257. English

    how i describe 19th century? really olden days?

    asked by Mohammad
  258. EARLY CHILDHOOD

    which of the following is an example of a closed skill a striking a stationary ball,catching a butterfly , hitting a pitched ball ,playing tag

    asked by tascha
  259. math

    Why f(x) and g(x) do not cut the x-axis at the same number of points?

    asked by Violentine
  260. English

    I'm pleased you can help me this week, too, Writeacher. Just a few things. 1) I've just had a parent-teacher meeting today. Some of my new students, whose grammar is very, very low and study very little complained about their bad marks in English. They are

    asked by Henry
  261. math

    If $570 is invested in an account that earns 12.75%, copounded annually, what will the account balance be after 11 years?( round to the neearest cent)

    asked by Anonymous
  262. geometry

    How can I tell the fraction and angle measure of each turn in rotational symmetry?

    asked by Britney
  263. Astronomy

    you are 100,000 feet above planet B and the ground range to your horizon point is 400 miles. What is the radius of planet B?

    asked by Anonymous
  264. physics

    What is the power delivered by a motor lifting an elevator weighing 1250kg up 89 floors at 16.8 meters per second

    asked by Kaye
  265. math

    if the area of a rectangle is 27 square inches and one side is 3 inches how many square inches is the other side

    asked by han
  266. algebra

    triangle 1 is 6,16,32 triangle 2 is 9,24 h they are similar how do i find h?

    asked by becca
  267. Alg2

    How how I write the first six terms of this sequence? Please be detailed and thanks in advance :) f(n)= 3/-m

    asked by Lily
  268. calculus

    evaluate the ∫from square root of 2 to 2 1/x^3square root of x^2-1 dx 1/24(-6+3 square root of 3 + pi) but i got something different

    asked by will
  269. Hamlet

    Pretend you are the artistic advisor to the director of a production of Hamlet. Write a short (about 400-500 word) memo in which you provide your recommendation as to how these two scenes shold be enacted in regard to this controversy. Explain your

    asked by Scarlet
  270. To Celest A

    how do I figure out how to get your posts? Again room210

    asked by Vanessa
  271. physics

    A 2kg box,initially at rest,is pulled along the ground by a force of 15N acting along the plane of the ground.A constant frictional force of 3N acts on the box during this motion.The box is displace 10m. Then calculate work done on the box?

    asked by Phumelela
  272. principle of management

    10. An announcement of the company-sponsored picnic travels from the employees’ social committee to the other employees through email. This communication is ______ and ________. a. Horizontal; informal b. External; informal c. Vertical; informal d.

    asked by vedrana
  273. Math

    How many pounds are in 3T and 900 pounds?

    asked by Olivia
  274. trig

    cos x/1+sin x + 1+sin x/ cos x= 2sec x

    asked by val
  275. English

    1. My nickname is "Captain Cook." 2. My nickname is "Beyonce." (Why do we have to put 'quoation marks as in the sentences above? Can we use the sentences without the quotation marks? What is the role of the quotation marks?)

    asked by rfvv
  276. social studies

    i need help with 007689,007690,007691,007692,007693... can anyone help me??????

    asked by kimberly
  277. Math

    I am looking for rebus words for math vocabulary. Does anyone have any ideas?

    asked by Jean
  278. MsSue Please

    I'm the guy doing the persuasive speak on the Oil leakage in the Kalamazoo river. I can see you're from/know of this area. Can you give me some pointers/idea's of what I could talk about/include in my persuasive speech. I've been doing a little reading of

    asked by Help
  279. science

    what do recommend to Pinchot as " a sustainable " level of fragmentation that conserves the forest's biodiversity and ecosystem services while still allowing for some development?

    asked by gloria
  280. English

    I forgot to include these other sentences. Thank you 1) Which of the work environments (places) showed at page .... do you think are most suitable to motive staff? 2) I would prefer to work in a firm equipped with a canteen so that I won't have to go back

    asked by Henry
  281. math

    Water is leaking out of an inverted conical tank at a rate of 700.0 cubic centimeters per min at the same time that water is being pumped into the tank at a constant rate. The tank has height 10.0 meters and the diameter at the top is 3.5 meters. If the

    asked by Justine
  282. Math word problem

    lydi sold 4/5 of her candles to raise money for the band. she has 8 candles left. how many candles did lydia start with? a coin purse contains quarters, dimes, and nickes. there are the same number of dimes as nickesl and half as many quarters as dimes.

    asked by marko
  283. Math

    If you had 4 blue blocks in a bag, how many red blocks would you have to put in to pull out the red ones 1/2 of the time

    asked by Abby
  284. Math

    y=-2-5 Please help me is it linear and help graph it.

    asked by Haylie
  285. math

    2.0*10^-19 = x(3x)^3 solve for x and show working

    asked by JIM
  286. organisation of commerce

    how to distingwish between advertising and publicity

    asked by chetna
  287. Alg. 2

    3x-2/12 - 1/6 = 1/6 Please help me to solve.

    asked by Jason
  288. math

    I need numbers flashcards from 13 to 61

    asked by rasha
  289. math

    A seismograph 300km from the epicenter of an earthquake recorded a maximum amplitude of 5.8*10^2lrm, find this earthquake's magnitude on the RicHTER scale to the nearest tenth.

    asked by sue
  290. math

    If $570 is invested in an account that earns 12.75%, copounded annually, what will the account balance be after 11 years?( round to the neearest cent)

    asked by Anonymous
  291. Math

    Multiply and Simplify: (a^x-a^(-x))^3 =(a^x-a^(-x))(a^x-a^(-x))(a^x-a^(-x)) =(a^x-a^(-x))(a^2x-a^0-a^0+a^(-2x)) =(a^x-a^(-x))(a^2x-2+a^(-2x)) =a^3x-2a^x+a^(-x)-a^x+2a^(-x)-a^(-3x) =a^3x-3a^x+3a^(-x)-a^(-3x) =??? Can you simplify down any further? please

    asked by Anonymous
  292. math

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

    asked by Jill
  293. english

    What are 3 main motifs in Act III of Hamlet?

    asked by Sally
  294. linguistics

    why is there a length difference between the word "house" in 'greenhouse' and 'green house' when you say the word? I know it takes longer to say 'house' in "green house" but why does it take longer? please help me. I am so confused :(

    asked by Mitch
  295. Calc 2

    The region bounded by y= 1/(x^2+2x+5), y=0, x=0, and x=1, is revolved about the x-axis. Find the volume of the resulting solid.

    asked by Mo
  296. Math

    If c-12 = 7 (as my teacher says) then divid that by x sove for x then divide that by 13 then - 7

    asked by Olivia
  297. Pre-algebra

    what is 36>-9t and why please thank you

    asked by taylor
  298. trig

    5sin(2x)+4cos(x)+0

    asked by john
  299. math

    Find the equivalent fraction of 1/4

    asked by Anonymous
  300. Math

    (5 * 10^2) * (5.6 * 10^4)

    asked by Anthony
  301. trig

    SOlve over (2,pie) and find the general solution in radians. 2sin3x = square root of 2

    asked by Leigh
  302. cal

    Use Euler's method with step size0.4 to estimatey(2) , where y(x) is the solution of the initial-value problem y'=4x+y^2, y(0)=1. . y(2)=

    asked by carlton
  303. Math/conics

    For each point in a set of points, its distance from (3,4) is four times it's distance from (-5,2) a. Find the equation b. tell which conic section the graph will be.

    asked by Mason
  304. Math

    A bag has 4 red, 6 white, and 9 blue marbles. How many ways can 5 marbles be selected if 2 are one color, and 3 are another color?

    asked by Bob
  305. logic

    "P v Q" is best interpreted as

    asked by kim
  306. help!

    Are ways to prevent oil leakage in Kalamazoo?

    asked by help
  307. Anthropology

    Ethnographic methods are to ethnological methods as

    asked by Mary