1. Math

    Jesse played two days of golf. On the second day, he got a score of 6 below par, or -6. His total for the two days was 0 above par, or 0. Define a variable. Then write and solve an equation to find the score Jesse got on the first day. Show your work.

    asked by Anonymous on November 12, 2015
  2. Physics(Help! Help!! Help!!!)

    a) Find the magnitude of the electrostatic force between 2 negative charges separated by a distance of 1augustro. b)what is the magnitude of gravit'l force between the negetive charges (electro)? c) determine the ratio of the gravt'l force and

    asked by Said Help on May 20, 2011
  3. Math/Physics

    I am given a damping constant of 20 dyne*sec/meter...do I need to convert this if the rest of my givens are, for mass = 2kg, k (spring constant) = 82 N/m. I am trying to find the equation of motion of a spring but cannot solve it until I know how to

    asked by COFFEE on July 13, 2007
  4. Physics(Help! Help!! Help!!!)

    a) Find the magnitude of the electrostatic force between 2 negative charges separated by a distance of 1augustro. b)what is the magnitude of gravit'l force between the negetive charges (electro)? c) determine the ratio of the gravt'l force and

    asked by Said Help on May 20, 2011
  5. Physics(Help! Help!! Help!!!)

    a) Find the magnitude of the electrostatic force between 2 negative charges separated by a distance of 1augustro. b)what is the magnitude of gravit'l force between the negetive charges (electro)? c) determine the ratio of the gravt'l force and

    asked by Said Help on May 20, 2011
  6. Physics(Help! Help!! Help!!!)

    a) Find the magnitude of the electrostatic force between 2 negative charges separated by a distance of 1augustro. b)what is the magnitude of gravit'l force between the negetive charges (electro)? c) determine the ratio of the gravt'l force and

    asked by Said Help on May 20, 2011
  7. chemistry

    Concentrated phosphoric acid,H3PO4 was added slowly into some water to produce 5.0dm^3 of a dilute acid solution.100g of the pure phosphoric acid,H3PO4 was present in the solution.Find the concentration of the acid,in g dm^-3.

    asked by mandy on May 5, 2014
  8. math

    an architect has allocated a rectangular space of 325ft^2 for a square dining room and a 12ft wide kitchen. find bothy the width of the square dining room and the length of the entire rectangular space.

    asked by pam on November 1, 2013
  9. math

    Stacey used her 20% discount card to buy 7 cans of tomatoes and 15 cans of mushrooms for $10.64. The next day Brian spent $ 7.21 on 17 cans of tomatoes and 5 cans of mushrooms in a "30% off" sale. Find the undiscounted pre- sale price of each type of can.

    asked by Tom on May 12, 2013
  10. algebra

    When Amy drives her car to work, the trip takes 1/2 hour. When she rides the bus, it takes 3/4 hour. The average speed of the bus is 12 mph less than her speed driving. Find the distance she travels to work.

    asked by Molly on June 19, 2012
  11. algebra

    When Amy drives her car to work, the trip takes 1/2 hour. When she rides the bus, it takes 3/4 hour. The average speed of the bus is 12 mph less than her speed driving. Find the distance she travels to work.

    asked by Molly on June 19, 2012
  12. Math

    I am to find the area of a square. It is cut in half and the line is measured at 6 square root 2. It also says that the two triangles are equallateral triangles. I know that the equation for a equalateral triangle is A = the square root of 3 times s

    asked by Punkie on December 15, 2009
  13. physical

    staring from rest, a 3.5 kg object is acted upon by an unbalanced force and acquires a speed of 14.0 m/s after moving a distance of 35 m. find (a) the acceleration of the object, (b) the unbalanced force acting on the object, and (c) the time it takes for

    asked by john on September 11, 2017
  14. statistics

    150 students is 60 kg the mean of body is 70 kg withstandard deviation of 10 kg and mean weight of girls is 55 kg with standard deviation of 15kg.calculate the number of boys and the combined standard deviation. Also find whether the coefficient of

    asked by Anonymous on August 11, 2014
  15. Math

    Pedro bought 4 boxes of cereal for some amount. The cost per box was $3. Write a division equation to find the amount of money Pedro spent on his cereal. I can do a multiplication equation but don’t understand how to do a division one

    asked by Cherie on May 29, 2019
  16. Physics-mechanics

    A satellite is placed in orbit, with a radius that is half the radius of the Moon's orbit. Find the period of the satellite in units of the period of the Moon. (sketch and analyze the situation, show all working so I can understand how you arrived at your

    asked by Rebecca on December 27, 2012
  17. science

    An empty truck wieght 4000N.its engine can produce a maximum acceleration 1m/s square .if truck is loaded with 2000N,find the maximum acceleration the engine can produce.i want watch video of this question.physic

    asked by jahangir on September 13, 2017
  18. Science

    Thomas left the White House and traveled toward the capital at an average speed of 24 km/h. Jasmine left at the same time and traveled in the opposite direction with an average speed of 55 km/h. Find the number of hours Jasmine needs to travel before they

    asked by larney on November 20, 2015
  19. math

    Triangle XYZ has vertices X(-5,3), and Z(7,-6). Find the coordinates of vertex X after the triangle is dialated using a scale factor of 4. I saw that you didn't want to see another post if we didn't try working it out first. But I need help understanding

    asked by marie on December 28, 2012
  20. Algebra/can you ck my anwers

    A class obtained the following scores on a test. Test Score Frequency 90 2 80 5 70 10 60 3 50 3 40 2 Find the mean, the median, the mode, and the range for the class. (If an answer does not exist, enter DNE.) 2(90)+5(80)+10(70)+3(60)+3(50)+4(40)than divide

    asked by Mary Ann on June 3, 2014
  21. math

    John and Allen are bicycle riders that are currently 30 miles apart on a certain trail. If they leave at the same time and travel in the same direction, John overtakes Allen in 6 hours. However, if they leave at the same time but travel toward each other,

    asked by Anonymous on August 10, 2015
  22. Math

    I already know the angle of Eastdale which is 45° due to the turn from due east to the northwest. So therefore so I need to find the measures of angle c and angle n. I can use the Law of Sines. sin‹C/c=sin‹E/e sin‹C/18=(√2/2)/12.7308

    asked by Alex on September 26, 2014
  23. Ap calc

    Consider the function h(x) = a(-2x+1)^5-b, where a doesn't equal 0 and b doesn't equal 0 are constants. A. Find h'(x) and h"(x) B. show that h is monotonic ( that is, that either h always increases or remains constant or h always decreases or remains

    asked by James on February 18, 2013
  24. Math

    A factory produces x calculators per day. The total daily cost in Shillings incured is 5x^2-800x+500. If the calculators are sold for sh (100-10x) each, i, Determine the profit function ii, Find the number of calculators that would maximize the daily

    asked by mesh on November 30, 2015
  25. Math

    A factory produces x calculators per day. The total daily cost in Shillings incured is 5x^2-800x+500. If the calculators are sold for sh (100-10x) each, i, Determine the profit function ii, Find the number of calculators that would maximize the daily

    asked by Mesh on November 19, 2015
  26. Math

    A factory produces x calculators per day. The total daily cost in Shillings incured is 5x^2-800x+500. If the calculators are sold for sh (100-10x) each, i, Determine the profit function ii, Find the number of calculators that would maximize the daily

    asked by Mesh on November 18, 2015
  27. physics

    A typical steel B-string in a guitar resonates at its fundamental frequency at 240 Hertz. The length of the string is 0.620 m. What is the wave velocity along the string? Find your answer in m/s, but do not enter units. IS THE ANSWER 148.8m/s?

    asked by Jamie on March 31, 2011
  28. physics

    Two wires are made of the same material. The first wire dissipates power P with a current of I. If the second wire is 3 times as long and has twice the diameter, what will the current need to be through the second wire to dissipate the same power P as the

    asked by dominic hart on June 3, 2014
  29. physics

    a projectile is thrown from the ground with an initial velocity of 20.0m/s at an angle of 40 degrees above the horizontal, find the maximum height,the time required to reach its maximum height,c) it velocity at the top of the trajectory.d) the range of the

    asked by daniel on February 19, 2015
  30. Math Answer Check

    P is a point on the terminal side of θ in standard position. Find the exact value of the six trigonometric functions for θ. P(-8, -8) Ans: cotangent: 1 secant: negative square root 2 cosecant: negative square root 2 sin: square root 2 / 2 cosine: square

    asked by Anonymous on March 18, 2015
  31. chem

    how many milliter of .246 M HNO3 should be added to 213 ml of 0.00666 M 2,2'-bipyridine to give a pH of 4.19? please help, does this problem need to be solved with ka or kb?. Is 2,2'- bipyridine a base, this is the problem from my text book, but it is not

    asked by bun on February 2, 2010
  32. Physics

    In this lab we did, we measured the angles of light that came through a piece of this special plastic. We had to find out the index of refraction for each of the angles of incidence in two different cases. The question asks "Is there a good agreement

    asked by Emily on February 14, 2008
  33. Calculus Please Check my answer

    the velocity of a particle moving along the x axis is v(t)=t^2+2t+1, with t measured in minutes and v(t) measured in feet per minute to the nearest foot find the total distance traveled by the particle from t=0 to t=2 minutes so, I took the integral of the

    asked by Ke$ha on May 22, 2017
  34. bridge

    Mr. Feng conducted five math tests. Trinity had completed four tests and scored 79, 78, 82, and 75. She wanted to achieve an average of 80% in her math tests. Write an inequality to find the minimum score Trinity can make on the fifth test in order to

    asked by Summer on September 6, 2016
  35. Calculus

    A container in the form of a right circular cone of height 16 cm and base radius 4 cm is held vertex downward and filled with liquid. If the liquid leaks out from the vertex at a rate of 4 cm^3/s, find the rate of change of the depth of the liquid in the

    asked by Helga on November 21, 2011
  36. statistics

    In a poll of voters in a certain city, 32% said that they backed a bill which would limit growth and development in their city. The margin of error was reported as 1.7% with 90% confidence. Determine the bounds for the confidence interval. A. (88.3%,

    asked by debbie on October 23, 2011
  37. kcc ..... mechanics(sub)

    2 spherical ball aer kept inside ..weight of ball a 3000N. weight of ball b 2000N.. and all surfaies are smooth find the reaction between ball and container............plz sir give me the answer this question ...in this question figure is given but i m not

    asked by sandeep on September 9, 2011
  38. Physics

    Suppose a monatomic ideal gas is changed from state A to state D by one of the processes shown on the PV diagram. Find the total work done on the gas if it follows the constant temperature path A-C followed by the constant pressure path C-D. A = 2atm and

    asked by Dan on December 6, 2010
  39. chemistry

    Use activity coefficients to find the concentration of hydrogen ions in a solution of 90.0 mM butanoic acid and 0.05 M NaCl. The ionization constant of butanoic acid is Ka = 1.52 × 10-5. Take the size of C3H7COO– to be 500 pm. How do I calculate the

    asked by Elena on October 3, 2014
  40. physics repost

    Three masses are aligned along the x axis of a rectangular coordinate system so that a 2 kg mass is at the origin, a 3kg is at (2,0) m, and a 4 kg mass is at (4,0) m. Find (a) the gravitational force exerted on the 4 kg mass by the other two masses and (b)

    asked by Anonymous on December 9, 2007
  41. Statistics

    A family consists of ten children. Assuming that the sexes are equally probable, find the expected number of boys in the family. What is the probability that the expected number of boys will not occur? (Not sure where to start) I got partial credit and I

    asked by Megan on October 19, 2015
  42. ph

    A gymnast is swinging on a high bar. The distance between his waist and the bar is 1.15 m, as the drawing shows. At the top of the swing his speed is momentarily zero. Ignoring friction and treating the gymnast as if all of his mass is located at his

    asked by alika on October 2, 2014
  43. Physics help please!!!

    A 2.10 kg frictionless block is attached to an ideal spring with force constant 315N/m . Initially the block has velocity -3.75m/s and displacement 0.270m . Find (a) the amplitude of the motion. (b) the maximum acceleration of the block. (c) the maximum

    asked by john on March 27, 2012
  44. Physics

    A 2.10 kg frictionless block is attached to an ideal spring with force constant 315N/m . Initially the block has velocity -3.75m/s and displacement 0.270m . Find (a) the amplitude of the motion. (b) the maximum acceleration of the block. (c) the maximum

    asked by chiongo on October 24, 2014
  45. trigonometry- college

    For two hours, a boat sails straight from port A to port C with a speed of 50 miles per hour. Port B is due east of port A, and the bearing of line segment BC is 20 degrees south west. Find the bearing of line segment AC. I really don't know what's the

    asked by jessica mantujac on February 21, 2015
  46. PROBABILITY

    The total amount being spent on personal calls in a month by employees of a company follows a normal distribution with a mean of $900 and a standard deviation of $50. Find the probability that in a randomly selected month the amount spent on personal calls

    asked by BBABY on May 30, 2010
  47. Statistics

    The ages (in years) of 10 infants and the number of hours each slept in a day Age, x: 0.1, 0.2, 0.4, 0.7, 0.6, 0.9, 0.1, 0.2, 0.4, 0.9 Hours slept, y: 14.9, 14.5, 13.9, 14.1, 13.9, 13.7, 14.3, 13.9, 14.0, 14.1 Find the equation of the regression line. Then

    asked by Amanda on April 4, 2012
  48. Physics

    A car's initial velocity of 13.5 m/s accelerates at a rate of 1.9 m/s^2 for 6.2 s. Then, it accelerates at a rate of -1.2 m/s^2 until it stops. 1) What is the car's maximum speed? 2) What is the total time from the start of the first acceleration until the

    asked by Erica on February 1, 2012
  49. Social Studies

    Here's the question i have been struggling with: "Imagine you could go back to the Canada of 1014. What attitudes would you find most difficult to deal with? Why? What specific social values do you hold that would conflict with those commonly held in 1914"

    asked by Joash on September 13, 2016
  50. physics

    Three masses are aligned along the x axis of a rectangular coordinate system so that a 2 kg mass is at the origin, a 3kg is at (2,0) m, and a 4 kg mass is at (4,0) m. Find (a) the gravitational force exerted on the 4 kg mass by the other two masses and (b)

    asked by Anonymous on December 9, 2007
  51. math

    3 brothers had a contest to see who could jump the farthest.Mario jumped 4 feet.Cesar jumped 6 feet farther than Mario,and Ramon jumped half as far as Caear.Which number sentence could be used to find the r,the distance that Ramon jumped? A.4+6-2=r

    asked by NrGliight on May 9, 2012
  52. math

    The average number of calories in a 1.5 ounce chocolate bar is 225. Suppose that the distribution of calories is approximately normal with standard deviation =10. Find the probability that a randomly selected chocolate bar will have a) Between 200 and 220

    asked by Kath on April 10, 2013
  53. College Algebra

    Suppose that the price per unit in dollars of a cell phone production is modeled by p = $45 − 0.0125x, where x is in thousands of phones produced, and the revenue represented by thousands of dollars is R = x · p. Find the production level that will

    asked by Bri on October 5, 2016
  54. Differential Equations

    For the following initial value problem: dy/dt=1/((y+1)(t-2)), y(0)=0 a)Find a formula for the solution. b) State the domain of definition of the solution. c) Describe what happens to the solution as it approaches the limit of its domain of definition. Why

    asked by Erica on January 31, 2013
  55. chemistry

    A 2.000g sample of magnesium was burned in air to form an oxide. After the product was purified it was found to have a mass of 3.317g. What is the empirical formula for the product? I know how to find a empirical formula, I just don't understand what

    asked by Tatiana on October 29, 2009
  56. Calculus

    The demand function for a bottle of hand lotion is p(x)=0.78+0.0003x, where x is the number of bottles sold and p is the price, in dollars. The cost function is c(x)=480-0.32x+0.0005x^2. Find the marginal profit when 700 bottles of hand lotion are sold.

    asked by matt on October 19, 2016
  57. AP PHYSICS

    A gymnist is swinging on a high bar. The distance between his waist and the bar is 1.1 m, as the drawing shows. At the top of the swing his speed is momentarily zero. ignoring friction and treating the gymnist as if all his mass is located at his waist,

    asked by Mondo on November 13, 2010
  58. Beginning of Stats

    A study of 50 mathematics professors showed that they spend, on average,12.4 minutes correcting a student's final examinations. Find a 90% confidence interval of the mean time for all mathematics peofessors spend on conrrecting final examinations when

    asked by Laddi on December 10, 2012
  59. Math Help and check

    The weights of ripe watermelons grown at Mr. Smith's farm are normally distributed with a standard deviation of 2 lb. Find the mean weight of Mr. Smith's ripe watermelons if only 5% weigh less than 18 lb. (Give your answer correct to one decimal place.)

    asked by Tom 6 on June 15, 2013
  60. Physics

    If the distance between two slits is .05mm and the distance to the screen is 2.5m find the spacing between the first and second order bright fringees for yellow light of wavelenght 600nm. d=5x10^-5m L=2.5m wavelength= 6x10^-7m x=? x=wavelength*L/d

    asked by Andrea on April 22, 2008
  61. Business Cal

    The research department for a hardware chain has determined that at one store the marginal price of x boxes per week of a particular type of nail is: p'(x)=-4000/(2x+15)^3 Find the demand equation if the weekly demand for this type of nails is 10 boxes

    asked by Alex on December 4, 2006
  62. Chemistry.

    The complete combusion of 0.5763 grams of glucose in a bomb calorimeter (Cbomb = 6.20 kJ/degrees C) raises the temperature of the calorimeter by 1.45 degrees C. what is the food value of glucose in calories per gram? (Hint: remember 1 Cal = 4.184 kJ) i do

    asked by Rachel on March 29, 2011
  63. physics

    need help with physcis vector problem Using combining vectors to find displacement problem(BEST answer)? tourist on a jet ski move 1.2km 55 degrees North of E and then 3.15km 70 degrees south of east. determine the jet ski's displacement.

    asked by jake on March 1, 2010
  64. physics

    An incident X-ray photon of wavelength 0.2800nm is scattered from an electron that is initially at rest. The photon is scattered at an angle of 180.0 degrees and has a wavelength of 0.2849nm. Use the conservation of linear momentum to find the momentum

    asked by Leah on April 26, 2008
  65. Math

    I have 16 numbers: 3,5,10,11,15,20,8,11,9,10,10,12,13,14, 15,10. These numbers have to be arranged in a 4 by 4 (horizontally and vertically) where each row equals 44. Please Help! Jumping rope can burn 600 calories per hour. write and solve an inequality

    asked by Dianne on December 14, 2006
  66. physics

    3. A man leaves his home by car and travels 5 km on a road running due East. The driver then turns left and travels 2 km due north to a junction where he joins a road that goes North West and drives a further 2 km. Find his displacement from home by then.

    asked by karen on February 2, 2014
  67. psychology

    I need to write a psychological literature review on a specific area from one of the topics below: -Human Development -Motivation and Emotion -Personality Theories and Therapies -Psychological Disorders What is a literature review and how to write one? Why

    asked by mic_ on July 30, 2009
  68. psychology(literature review)

    I need to write a psychological literature review on a specific area from one of the topics below: -Human Development -Motivation and Emotion -Personality Theories and Therapies -Psychological Disorders What is a literature review and how to write one?

    asked by mic_ on July 30, 2009
  69. Physics

    A force F acts to the right on a 4.81 kg block. A 2.53 kg block is stacked on top of the 4.81 kg block and can slide on it with a coefficient of friction of 0.2 between the blocks. The table has a coefficient of friction of 0.23. The acceleration of

    asked by Ahmed on September 28, 2014
  70. Precalc

    Find an equation of a rational function that satisfies the given conditions. Vertical asymptote: x = 4 Horizontal asymptote: y = 0 X-intercepts: none Y-intercepts (0, -1/4) Multiplicity of 1 Removable discontinuity: x = 1 End behavior: x --> infinity, f(x)

    asked by Max on November 13, 2017
  71. word problem

    A 62 foot rope hangs from the top of a pole. When pulled taut to its fullest length the rope reaches a point on the ground 31 feet from the base of the pole. Find the height of the pole to the nearest tenth of a foot. Let p equal the height of the pole.

    asked by Sammie on September 24, 2010
  72. Algebra

    A problem involving a ball being thrown in the air is modeled with a quadratic function. Which of the following would you be solving for if asked to find the time at which the ball will reach its maximum height? A. an x-intercept of the graph B. the

    asked by Emma on July 24, 2014
  73. physics

    A gymnast is swinging on a high bar. The distance between his waist and the bar is 1.26 m, as the drawing shows. At the top of the swing his speed is momentarily zero. Ignoring friction and treating the gymnast as if all of his mass is located at his

    asked by heather on February 28, 2011
  74. Math

    a. Suppose a market research company finds that at a price of p = $30, they would sell x = 58 tiles each month. If they lower the price to p = $18, then more people would purchase the tile, and they can expect to sell x = 70 tiles in a month’s time. Find

    asked by Jill on September 30, 2011
  75. Math

    Find each probability. Write your answer in simplest form. I am a bit confused on what they mean when they say write the answer in simplest form. Picking a diamond from a standard deck of playing cards which has 13 cards in each of the four suits: spades,

    asked by Patrick on March 27, 2018
  76. Math

    1. Simplify & state any excluded values c-5 ―--------- c²-25 2. Simplify & state any excluded values x² - x - 6 ---------------- x² + 7x + 10 9. Find the constant of variation, k, for y= –8 when x = 12. 10. Write an inverse variation to model the

    asked by Pb&J on May 21, 2018
  77. College Mathematics

    Guys, could you please help me with this problem? I'm a bit lost. Consider a population that begins growing exponentially at a rate of 5% per year and then follows a logistic growth pattern. If the carrying capacity is 100 million, find the actual growth

    asked by Miguel on August 8, 2008
  78. calculus

    A rocket rises vertically from a point on the ground that is 100m from an observer at ground level. The observer notes that the angle of elevation is increasing at a rate of 12∘per second when the angle of elevation is 60∘. Find the speed of the rocket

    asked by ibo on September 29, 2010
  79. Physics

    Two capacitors A and B having capcitance 2micro farad and 6 micro farad are charged separately to same potential of 120 volt.Now pisitive plate of A is connected to negative plate of B and negative plate of A is connected to positve plate of B. Find final

    asked by Afzaal on June 20, 2017
  80. chemistry

    The volume of an aqueous solution of NaCl at 25oC is expressed as a function of the amount m in 1kg of solvent in the following form; V/cm3 = 1000.94 + 16.4 (m/mol) + 2.14 (m/mol)3/2 - 0.0027 (m/mol)5/2 Find the partial molar volume of NaCl and water in 1

    asked by pritisha on August 13, 2018
  81. more math

    1.) If c=12√3 cm, then a=___ and b=___. 2.) A refrigerator has a width of 3 feet. The angle of elevation from the bottom corner to the opposite corner is 65º. What is the height of the refrigerator? 3.) In a 30-60-90 triangle, the shorter leg has

    asked by Unknown on June 12, 2010
  82. Physics

    The soccer goal is 23.05 m in front of a soccer player. She kicks the ball giving it a speed of 17.97 m/s at an angle of 25.83 degrees from the horizontal. If the goalie is standing exactly in front of the net, find the speed of the ball just as it reaches

    asked by Lindsay on November 6, 2007
  83. math

    Divers looking for a sunken ship have defined the search area as a triangle with adjacent sides of length 2.75 miles and 1.32 miles. The angle between the sides of the triangle is 35 degrees. To the nearest 100th, find the search area. 2.08mi 2.9mi 1.04mi

    asked by hill on April 15, 2012
  84. MATH

    Brenda donates part of her salary to the local childrens hospital each month by having $15 taken out of her monthly paycheck. Write an integer to represent the amount taken out of each paycheck. Find an integer to represent the change in the amount of

    asked by Brandon Savon on September 14, 2014
  85. Chemistry (Acid-Base)

    Butanoic acid (Ka = 1.52 x 10-5) has a partition coefficient of 3.0 (favouring benzene) when distributed between water and benzene. Find the concentration of butanoic acid in each phase when 20.0 mL of 0.10 M aqueous butanoic acid is extracted with 25 mL

    asked by Daniel on January 21, 2015
  86. Physics

    A gamma ray with 700KeV energy is Compton-Scattered from an electron. Find the energy of the photon scattered at 110 degrees, the energy of the scattered electron, and the recoil angle of the electron.

    asked by Sarah on September 24, 2014
  87. Physics

    A gamma ray with 700KeV energy is Compton-Scattered from an electron. Find the energy of the photon scattered at 110 degrees, the energy of the scattered electron, and the recoil angle of the electron.

    asked by Paul on September 23, 2014
  88. Physics

    A gamma ray with 700KeV energy is Compton-Scattered from an electron. Find the energy of the photon scattered at 110 degrees, the energy of the scattered electron, and the recoil angle of the electron.

    asked by Sarah on September 23, 2014
  89. Chemistry

    Butanoic acid (Ka = 1.52 x 10-5) has a partition coefficient of 3.0 (favouring benzene) when distributed between water and benzene. Find the concentration of butanoic acid in each phase when 20.0 mL of 0.10 M aqueous butanoic acid is extracted with 25 mL

    asked by Daniel on January 19, 2015
  90. Physics

    A gamma ray with 700KeV energy is Compton-Scattered from an electron. Find the energy of the photon scattered at 110 degrees, the energy of the scattered electron, and the recoil angle of the electron.

    asked by Paul on September 23, 2014
  91. English

    In which of the following sentences does the use of prepositional phrases make it harder for readers to find the main point of the sentence? A. The committee voted on several of the issues under consideration. B. In what way is a political group considered

    asked by brooke on October 21, 2016
  92. Enlish

    In which of the following sentences does the use of prepositional phrases make it harder for readers to find the main point of the sentence? A. The senator chose to run on a platform that cut taxes for the wealthy. B. In what way is a political group

    asked by feecan on February 11, 2018
  93. SS

    The Aztecs adapted to their environment mainly by using terracing and irrigation living a nomadic hunter-gather lifestyle trading peacefully with neighbors ---- Settling along the coasts where they could find fish How did the Aztec become so powerful? they

    asked by butternutsquash on January 16, 2018
  94. Algebra

    Thank you Christina.. I am taking Algebra online...something I would never recommend....How would I write the equation of the line passing through (6,37) and (1,12)? the most common way is to use y=mx + b where m is the slope and b is the y-intercept so

    asked by Misty on July 27, 2007
  95. Chemistry

    Find the mass of water (H2O) needed to react with 150 grams of potassium (K) 2K(s) + 2 H2O (g)-2KOH +H2(g) How do I get the number of moles in H2O? Desperate to understand this. I got K= 150g./39.0983=3.84 mols of K. Then would it be 3.84(2mols H2O/7.68)

    asked by Teresa on October 27, 2014
  96. Chemistry

    A compound isolated from oil of mint has a characteristic cool, refreshing odour. It is frequently used in cough drops to ease the pain of a sore throat. This compound contains only C, H, and O. If 95.6 mg of this compound burns completely in O2, and

    asked by Chelsea on October 18, 2015
  97. Chemistry

    A compound isolated from oil of mint has a characteristic cool, refreshing odour. It is frequently used in cough drops to ease the pain of a sore throat. This compound contains only C, H, and O. If 95.6 mg of this compound burns completely in O2, and

    asked by Chelsea on October 18, 2015
  98. Physics

    A water slide is constructed so that swimmers, starting from rest at the top of the slide, leave the end of the slide traveling horizontally. One person hits the water 5.00 m from the end of the slide in a time of 1.000 s after leaving the slide. Ignoring

    asked by Vince on October 26, 2009
  99. Physics

    Need help with part b... I got a to be k = 94.985 N/m I can't figure out how to go about doing part b.. A platform of mass 0.79 kg is supported on four springs (only two springs are shown in the picture, but there are four altogether). A chunk of modeling

    asked by Anonymous on December 5, 2010
  100. Operations Management

    Setup Times Read the case study below “Hi-Ho Yo-Yo, Inc.”. Write a short summary of each of the four methods for selecting the order in which to release the products to printing. Complete a short analysis for each method which provides the average flow

    asked by Gabe on July 18, 2011

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