Questions Asked on
December 21, 2014

  1. Chemistry!

    Liquid A has vapor pressure X, and liquid B has vapor pressure Y. What is the mole fraction of the liquid mixture if the vapor above the solution is 30% A by moles? 50% A? 80% A? (calculate in terms of x and y) I'm a little bit confused because I thought

    asked by Amy
  2. math

    Manny makes dinner using 1 box pasta and 1 jar of sauce. If pasta is sold in packages of 6 boxes and sauce is sold in packages of 3 jars what is the least number of dinners that Manny can make without any leftovers?

    asked by isabella
  3. Chemistry

    what are the intermolecular forces present in: 1. n-propyl alcohol 2. n-butanol 3. 2-butanol 4. tert-butanol alcohol 5. pentane 6. hexanes I know that the forces include- dipole-dipole, ion-dipole, dispersion, and hydrogen bonding...but I don't know how to

    asked by Jim
  4. Static Friction..I really Have no Idea

    A 0.40 kg block rests on a desk. The coefficient of static friction is 0.20. You push the side of the block but do not have a spring scale to measure the force you use. The block does not move. Which statement is true about the force of static friction? It

    asked by Sam
  5. chemistry

    A sample of co2 occupies 6.00l at 25c and 700. MmHg. What is the volume of the gas at stp

    asked by k
  6. Physics

    A 10.0 kg barrel is lifted by pulling up on a rope. The barrel accelerates at 1.50 m/s2. Find the force of tension on the rope.

    asked by Henry
  7. Physics- revolutions

    A 0.013 kg rubber stopper attached to a 0.93 m string is swung in a circle. If the tension in the string is 0.70 N, what is the period of the stopper's revolution?

    asked by Punani
  8. Math-How do I do this problem?

    An inverted conical tank (with vertex down) is 14 feet across the top and 24 feet deep. If water is flowing in at a rate of 12 ft3/min, find the rate of change of the depth of the water when the water is 10 feet deep.

    asked by Mark
  9. Integration

    a cattle trough has a trapezoidal cross section with a height of 1 m and horizontal sides of width 1/2 m and 1 m assume the length of the trough is 10 m. A. how much work is required to pump out the water in the trough? B. if the length is doubled does the

    asked by Anonymous
  10. History

    Hi I'm honestly stuck on these 3 questions, I looekd on wiki and everything. Please Please help me out.. What action did President Polk take that resulted in the war between the United States and Mexico? He ordered troops to invade Mexico and capture Vera

    asked by Jen
  11. Physics

    Two objects, one of mass 3kg moving at 2m/s, the other of mass 5kg and speed of 2m/s move towards each other and collide in a head on collision. If the collision is perfectly inelastic, find the speed of the objects after the collision.

    asked by Brooke
  12. LA - Voices

    Which statement is true about the passive voice? A verb is in the passive voice when the subject performs the action/ It is generally considered better style for writers to use the passive voice. A passive verb is made from a form of have with the past

    asked by SkatingDJ
  13. Physics

    A 0.0420-kg hollow racquetball with an initial speed of 18.3 m/s collides with a backboard. It rebounds with a speed of 7.4 m/s. Calculate the total impulse on the ball.

    asked by Brooke
  14. math

    The amount used to purchase one litre of petrol can be used to purchase three liters of diesel or five liters of kerosene. Out of a certain amount, $510 is spent on diesel. How much is spent on kerosene if equal volumes of three liquids are purchased with

    asked by ragavi
  15. phys

    While spinning in a centrifuge, a 70.0 kg astronaut experiences an acceleration of 5.00 g, or five times the acceleration due to gravity on the earth. What is the centripetal force acting on her?

    asked by Ashley
  16. chemistry

    what volume of hydrogen will be produced if 100cm3 of ammonia is completely decomposed at constant temperature and pressure.

    asked by ch
  17. Algebra 1

    Which ordered pair is a solution of the inequality? y>= 4x-5 3,4 2,1 3,0 1,1

    asked by Steve
  18. Physics

    A baseball with mass of 0.145 kg is thrown straight down at the ground. At a particular speed, it has a drag force of 0.4 N acting on it. What is its acceleration at that time? -2.8m/s^2

    asked by Angel
  19. Science

    The work required to be done to stop a car of 1500 kg moving at a velocity of 60 km/h is?

    asked by Shubham
  20. economics

    A bond yields $100 yearly at 4 percent interest. What is the market value? I got $1,500.

    asked by Anonymous
  21. physics

    A speeder doing 50.0 mi/hr (about 22 m/s) in a 25 mi/hr zone approaches a parked police car. The instant the speeder passes the police car, the police begin their pursuit. If the speeder maintains a constant velocity, and the police car accelerates with a

    asked by christoper allen
  22. science

    A running back has 3500 J of kinetic energy and is running at a speed of 8 m/s. Calculate his mass.

    asked by steve
  23. chemistry

    When 40.2g of kc103 is heated what quantity of kc1 is produced

    asked by k
  24. Criminology

    Social control theories focus on: A. static aspects of the personality. B. physical features of the social environment. C. the process through which social integration develops. D. causative factors in criminal behavior. I think it's B, but not sure.

    asked by Pat
  25. maths

    Find the periodic payment R required to amortize a loan of P dollars over t years with interest earned at the rate of r %/year compounded m times a year. P=30,000 r = 8 t = 12 m =1

    asked by luvena
  26. physics

    A ball is thrown vertically up from the edge of a 150 m building with a veloicty of 10m/s. (A) how high did the ball rise? (b) how much time did it take fort he ball to reach this height ? (C) what is the velocity oft he ball as it strikest he ground ? (D)

    asked by christoper allen
  27. dimensions

    THE ASME RECOMMENDS THE USE OF?

    asked by almar
  28. chemistry

    In the determination of the molar mass of a volatile liguid a 250ml flask was found to contain 0.250g of the vapor measured at 273c and 760 mmhg pressure. The molar mass is nearest the value

    asked by k
  29. ENG 122 English Composition II

    Which of the following sentences is correctly punctuated? I always have a difficult time choosing a topic. Writing is hard! I always have a difficult time choosing a topic; writing is hard! All of the above None of the above

    asked by Jones
  30. MATHS

    ABCD is a cyclic quadrilateral in which angle BAD=70,angle ADC=80 and angle ABD=55,AC and BD intersect at M,find angle CMD

    asked by BHAGWAN
  31. Physics~

    The moon's gravity is one-sixth that of the earth. What is the period of a 0.25 m long pendulum on the moon?

    asked by Mary
  32. algebra

    an airplane flies with a constant speed of 960 km/h. How long will it take to travel a distance of 960 kilometers?

    asked by brea
  33. physics

    120 grams of an unknown metal at a temperature of 95 degrees celcuius is poured into 140 grams of aluminum calorimeter containing 220 grams of water. If the inital temperature of the water and calorimeter was 15 degree celcuius and the final temperature

    asked by christoper allen
  34. Math

    If 12 ft^2 of material is available to make a box with a square base and an open top, find the largest possible volume of the box. 2 ft3 4 ft3 5 ft3 8.5 ft3 9 ft3 the whole ft^2 and ft^3 throws me off..can you help

    asked by Peter
  35. math

    at a sale,josh bought 4 shirts and 3 pairs of jeans for $181.at the same store,mike bought 1 shirt and 2 pairs of jeans for $94.

    asked by ben
  36. ENG 122 English Composition II

    A good conclusion does all of the following EXCEPT It explains the contents of a source with quotes and citations. It articulates ideas in a complex manner that ties analysis together. It explains implications of ideas and the importance of the research.

    asked by Jones
  37. algebra

    Tickets are being sold for a theater. Cost for students: 2 dollars. Cost for other people: 5 dollars. The total amount of tickets sold: 250. Total amount of money made: 950. How many of the tickets were sold to the students? To the others?

    asked by Sidney
  38. physics

    two girls exeret a force of 30 N and 10 N on a bag in same direction. a dog tugs at bag and drag it in oppsite direction with the force of 5 N. calculate the new force exerted on bag and draw a vector diagram. F= 10+30 = 40 N dog applied force in opposite

    asked by ruby
  39. economics

    Mutual funds are attractive to small investors because (a) the funds offer a guaranteed return on investment (b) the funds are insured by an agency of the US government (c) the funds offer the opportunity to share in an investment in a variety of stocks

    asked by Bob
  40. science

    The various groups who make up the US public have different expectations of science. How do these differing expectations of science affect the ways groups place trust in science? Describe one example of a controversial expectation that the author gives.

    asked by Linda
  41. physics

    a force of 200 N is exerted at an angle 30 degrees with respect to the horizontal on an object whose mass is 30kg. the coefficient of friction between the object and the surface is the 0.2.(a)what is the frictional force?(B) what is the acceleration of the

    asked by christoper allen
  42. Math

    the conductor looked at his pocket watch to see what time the train would be leaving. it read 8:37 pm. if it takes the polar express 3 hours and 15 minutes to get to the north pole, what time will it be when it arrives?

    asked by Anon
  43. Math

    Mount-Rush more is a sculpture that was curved using a model with a scale of 1 inch: 1 foot. Sculpture Refer to the information at the above. Find the scale factor and actual height of George Washington's face on the sculpture if the height of the the

    asked by Isabella
  44. Physics- Horizontal Velocity

    How do you calculate the horizontal velocity of an object in a projectile problem?

    asked by Joan
  45. Science

    A ball is thrown up and attains a maximum height of 1000 m.It's initial speed was?

    asked by Shubham
  46. Do you guys get Christmas off?

    Hi, just wanted to know if you guys get Christmas off, you have been working hard and i think you need to spend some time with your families :)

    asked by Santa Claus ♥
  47. ap calc

    Find the value of c which satisfies Mean Value Theorem for the function f(x)=sin(x) on the closed interval (-3ð/2,3ð/2).

    asked by Anonymous
  48. Math!

    On the train we had 41 different kinds of cookies. 3 different flavors of cocoa, and 122 candies. How many treats did we have in all?

    asked by Max
  49. statistics

    interested in the mean IQ score of a given group of children. It is known that the IQ scores of the group have a standard deviation of . The psychologist randomly selects children from this group and finds that their mean IQ score is . Based on this

    asked by Anonymous
  50. math i really need help!!

    What is (5.93x10^5)-(2.71x10^4) scientific notation..

    asked by starie johnn
  51. Art

    What does the family look like it is celebrating in Le Traditionnel Gâteau des Rois by Edmond-Joseph Massicotte? It looks like Thanksgiving to me.

    asked by Anonymous
  52. algebra

    Abigail roller skates with a constant speed of 8 miles per hour. How far can she travel in 1 1/2 hours?

    asked by brea
  53. ENG 122 English Composition II

    Which thesis sentence best addresses a counter-argument? Carbohydrates are not healthy for most people. Despite years dependence on calorie reduction to lose weight, medical intervention and personalized diet plans are more effective than a generic diet of

    asked by Jones
  54. English-Madame Bovary

    These questions relate to the novel "Madame Bovary" by Gustave Flaubert. 1. Emma Bovary makes a number of decisions which have poor results. Which of the following would probably be Flaubert's explanation of why she made those decisions? A. Reading

    asked by Esmerelda
  55. help

    From the following information, determine the maturity date of the loan. Enter the full name of the month. (E.g., March) Loan Date Time of Loan (days) Maturity Date February 5 110

    asked by reva
  56. physics

    a horizontal force of 3 N is excerted on an object while a vertical force of 4 N is excerted at the same time. calculate the resultant force on the object? 3 square + 4 square = 25 so the resultant force will be 25 N

    asked by ruby
  57. Fluid Mechanics

    the problem says: Water flows from a bathtub through a 2.5 diameter plastic pipe to a large air-filled drain...etc Here, i need to know what is the pressure at the air-filled drain? Is it equal to the atmospheric pressure? Thanks in advance.

    asked by Mohamed
  58. Nothing Realted

    I know this question should not be here but my samsung galaxy s5 is not working. The screen will come but i can not do anything. Technically it is frozen. I have tried every method. I tried to take the battery out. It did not work. I also tried to reboot

    asked by Anonymous
  59. Calculas

    what is the velocity (in ft/s) of a sandbag 2.75 s after it is released from a hot-air balloon that is stationary in the air?

    asked by jessica
  60. Calculas

    area between the curves y=4-x^2 and y=x-8

    asked by jessica
  61. math

    A seed company claims that 9 of every 10 seeds will produce plants. How many plants should you get from a package of 220 seeds?

    asked by Tyshun
  62. ap calc

    For the curve f(x)=xln(x)+ (1-x)ln(1-x), find the value of x in the interval 0

    asked by Anonymous
  63. Math

    The clock struck midnight as the elves roared with approval for Santa to give his gift to Macy. How many hours would pass by if Santa could give out another gift tomorrow at midnight?

    asked by Student
  64. music appreciation

    Who was the first American-born conductor to lead the New York Philharmonic?

    asked by jessica
  65. math

    In a box there are 3 red, 3 blue and 3 green balls. If 3 balls are picked from the box randomly, one by one, with replacement, what is the probability that none of them will be blue?

    asked by protik
  66. College Math

    The number of visitors to your business website increased at a rate of 60% per day, going from 30 per day to 30,000 per day. How many days did it take to go from 30 to 30,000 visitors per day? 30,000(1+0.6) but I need to solve for t that's where I get

    asked by Patricia
  67. College Math

    mean of 21 and standard deviation of 1.2, what is the z-score of 21 No clue how to figure this out

    asked by Patricia
  68. Algebra

    Question Part Points Find the monthly payment for the loan. (Round your answer to the nearest cent.) A $118,000 home bought with a 20% down payment and the balance financed for 30 years at 10.5%

    asked by Shay
  69. math

    what are the base and exponent in the expression 5.6^4? add (3.4x10^6)+ (4.7x10^7)

    asked by starie johnn
  70. algebra

    grace roller skates with a constant speed of 13 km/h. How long will she take to travel a distance of 27 kilometers?

    asked by brea
  71. Algebra 2

    An object 5.7 feet tall casts a shadow that is 17.1 feet long. How long in feet would the shadow be for an object which is 14.4 feet tall?

    asked by Susie
  72. algebra

    an airplane flies with a constant speed of 500 miles per hour. How long will it take to travel a distance of 1000 miles?

    asked by brea
  73. ENG 122 English Composition II

    Topic sentences are optional and should not be used in a persuasive essay. True False

    asked by Jones
  74. multiplcation

    6 X 1750=

    asked by kirsten
  75. Calculus

    evaluate each of the following integral:- I= ∫((x^2+ 1)/(x^4+ 1))dx Y=∫(sinhxcoshx)dx/√(sinhx^4+coshx^4)

    asked by NA
  76. Fluid Mechanics

    I have a question in fluid mechanics...and i need to know the pressure in an air-filled drain? Is it the atmospheric pressure? Thanks in advance

    asked by Mohamed
  77. mechanic

    There are cases where the Rasul did not spell out specific criteria for a certain condition/situation.For example the minimum distance travelled to qualify as a musafir.In this instant,for example would the criteria to be a traveller depends what the uruf

    asked by mechanic
  78. Math

    An experimental solid disc flywheel has a 300m diameter and a mass of 70kg. Experiments show that, at all speeds of rotation, the frictional resistance to motion is equivalent to a torque of 0.15Nm. if when the flywheel is rotating at 50 rev/min, the

    asked by Anonymous
  79. Science

    WHY PUMICE STONE FLOAT IN WATER

    asked by Anish
  80. Science

    If 1 J of energy is applied to lift an object of 500 kg how high will it rise?

    asked by Shubham
  81. finance

    which of the following investments paid the highest rate of return? (a) a corporate bond that paid $72 per year in interest and that cost $600 to purchase (b) a money market fund that paid 8 percent interest (c) a corporate stock that cost $40 to buy and

    asked by Anonymous
  82. College Math

    numbers given are: 3.5, 2.6, 3, 3.1, 2.6, 2.8, range is 0.9 z-score of 3.1 is Okay I am lost

    asked by Patricia
  83. College Math

    variance of 30 for a data, what is the standard deviation

    asked by Patricia
  84. ap calc

    If f(x)=e^x, g(x)=sin(x), and h(x)=f(g(x)), then h'(pi/2)=? Please help I have no idea how to solve

    asked by Anonymous
  85. ap calc

    if f(X)= 2X-X^2,if xor equal to 1 find two values of c in the interval [0,2] that satisfy the mean value theorem. Please help I have no idea how to solve

    asked by Anonymous
  86. AP CALC

    Find the POSITIVE value of x that satisfies the mean value theorem for f(x)=sin(x) on the closed interval [-3pi/2, 3pi/2]. please help I have no idea how to solve this problem

    asked by Anonymous
  87. science

    is this correct? what I just sent you?

    asked by Linda
  88. French

    Is "Elles sont belles" or "Elles sont belle" correct? I think it is the former.

    asked by Anonymous
  89. ENG 122 English Composition II

    A writer can demonstrate the connection between evidence and claims by doing WHICH ONE of the following? allowing evidence to speak for itself showing a clear, logical connection letting common sense prevails staying firm to personal beliefs

    asked by Jones
  90. Chemistry

    the molar mass of triolein is 885 g/mol, how may moles of CO2 molecules do i have

    asked by Bren
  91. Math

    Determine which of the following is true for the function X^3+5x^2-8x+3 f(x) has a relative minimum at x = 2/3. f(x) has a relative maximum at x = 2/3 f(x) has a zero at x = 2/3 Both A and C are true.

    asked by Max
  92. Calculus

    Determine the equation of the normal line y=x^2+5 at the point (2, 9) I got y= 4x+1

    asked by Olivia
  93. calculus

    use implicit differentiation to find y=(x+8)^(3x)

    asked by John
  94. Calculus

    If 3x^2+y^2=7 evaluate ((d^2)y)/(dx^2) when x=1 and y=2

    asked by John