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

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?

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

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

5. chemistry

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

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.

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?

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.

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

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

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.

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

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.

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

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?

16. chemistry

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

17. Algebra 1

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

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

19. Science

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

20. economics

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

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

22. science

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

23. chemistry

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

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.

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

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)

27. dimensions

THE ASME RECOMMENDS THE USE OF?

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

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

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

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?

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?

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

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

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.

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.

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?

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

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

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.

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

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?

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

44. Physics- Horizontal Velocity

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

45. Science

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

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 :)

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).

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?

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

50. math i really need help!!

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

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.

52. algebra

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

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

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

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

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

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.

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

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?

60. Calculas

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

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?

62. ap calc

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

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?

64. music appreciation

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

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?

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

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

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%

69. math

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

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?

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?

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?

73. ENG 122 English Composition II

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

6 X 1750=

75. Calculus

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

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

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

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

79. Science

WHY PUMICE STONE FLOAT IN WATER

80. Science

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

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

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

83. College Math

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

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

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

87. science

is this correct? what I just sent you?

88. French

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

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

90. Chemistry

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

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.

92. Calculus

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