CC

Popular questions and responses by CC

John & Jane are married. The probability that John watches a certain television show is .4. The probability that Jane watches the show is .5. The probability that John watches the show, given that Jane does, is .7. 1) find probability that both John & Jane

2. chemistry

The molarity of urea in a solution prepared by dissolving 16 g of urea (MW 60.0g/mol) in 39 g of H2O is ______M. The density of the solution is 1.3 g/ml.

3. chemistry

A solution is prepared by dissolving 15.0 g of NH3 in 250.g of water. The density of the resulting solution is 0.974 g/ml. The mole fraction of NH3 in the solution is?

4. Math

Tony broke a larger array into 2 x 9 array and a 4 x 9 array. What did the larger array look like? Draw picture. Write a number sentence to show the relationship between the large array and the two smaller arrays.

5. economics

How do you think the Demand and Supply patterns have changed in the United states since 2008 when the recession started?

6. HELP!

Name and explain 3 problems of the Articles of Confederation. What is this question mean? and someone please give me some good site. i learned that last year the articles of confederation were one of the first governments after the revolution name three

7. HELP!

What caused states to demand a constitutional Convention and explain why? What three issues caused the most conflict during the Constitutional Convention and why? How did the COnstitutional delegates solve these problems? Plese tell me good site and teach

8. Algebra 2

A theater has 43 seats in the first row, 47 seats in the second, and 51 seats in the third row. How many seats are there in row 17

9. english

4. Which of the following sentences contains “passive voice?” (Points : 1) The airplane was wrecked by the wind. The wind wrecked the airplane. The cat chased the mouse. The bird flew after the balloon. a, b, c

10. Calc

A spherical snowball is melting in such a way that its diameter is decreasing at rate of 0.3 cm/min. At what rate is the volume of the snowball decreasing when the diameter is 13 cm. (Note the answer is a positive number).

11. chemistry

A 0.750 g sample of an unknown substance is dissolved in 20.0 g of benzene, C6H6. The freezing point of the solution is 4.53 oC. Calculate the molar mass of the substance. The normal freezing point for benzene is 5.53 oC and Kf is 5.12 oC/m.

12. chemistry

A 0.750 g sample of an unknown substance is dissolved in 20.0 g of benzene, C6H6. The freezing point of the solution is 4.53 oC. Calculate the molar mass of the substance. The normal freezing point for benzene is 5.53 oC and Kf is 5.12 oC/m.

13. geometry

Given Isosceles trapezoid ABCD. AB = 3x - 4 and CD = x + 12. Find AB. Isosceles trapezoid A B C D is drawn. 2 8 16 20

14. Algebra

I'm needing help with this. Thanks An individual can be classified by gender as male, female, by hair color as black, blonde, brown, red, unknown, and by eye color as black, brown, green. A) How many different classifications are possible (for example,

15. Chemistry

A 2.30 m solution of urea (CO(NH2)2; FW= 60.0) in water has a density of 1.14 g/mL. Calculate the percent mass of urea in this solution?

16. Physics Part 1

Rick is playing billiards and hits the cue ball. It makes contact with the 8 ball head on. If before the collision the cue ball was travelling at 2.4 m/s and after the collision the 8 ball was traveling at 2.13 m/s. How fast and in what direction is the

17. Math

Carolina runs 3 1/2 miles in 22 1/4 Minutes. how many miles does she run per minute A.) 3/22 mike per minute B.) 62/221 mile per minute C.) 14/89 mike per minute D.) 4/39 mike per minute

18. Physics

The driver in a car of total mass 800kg and which is travelling at 20m / s suddenly observes a stationary dog in his path 50m ahead . if the car brakes can exert a force of 2000N, what will likely happen

19. Math

Fiona earns $15 for each lawn she mows. What is the inequality to find out how many lawns she must mow to earn at least$135. My answer 15m

20. random

what kind of website is this? what is jiskha? Jiskha is the name given to the site by the man who runs the show here. His name is Leo. This is a help site with the emphasis on help. We try to help students do their homework. But we like to see what the

21. CHM

From the following: 1) pure water 2) 0.01 m solution of table sugar (C12H22O11) 3) 0.01 m solution of NaCl 4) 0.01 m solution of CaCl2 Choose the one with the largest van't Hoff factor and hence the lowest freezing point.

22. chemistry

an air bubble is released at the bottom of a lake where the temperature is 4 celsius and the pressure is 3.40 atm. if the bubble was 10.0 ml to start, what well its volume be at the surface, where the water temperature is 12 celsius and the pressure is 103

23. Math

A plumb bob is a weight hung at the end of a string, called a plumb line. The weight pulls the string down so that the plumb line is perfectly vertical. Suppose that the angle formed by the wall and the roof is 123° and the angle formed by the plumb line

24. government

What caused states to demand a constitutional Convention and explain why? What three issues caused the most conflict during the Constitutional Convention and why? How did the COnstitutional delegates solve these problems? Please tell me how to answer the

25. chemistry

Three solutions are mixed together to form a single solution. One contains 0.2 mol \rm mol Pb(CH 3 COO) 2 \rm Pb(CH_3COO)_2, the second contains 0.1 mol \rm mol Na 2 S \rm Na_2S, and the third contains 0.1 mol \rm mol CaCl 2 \rm CaCl_2. Write the

26. Legal and Ethical Aspects of Health Information

Describe the theories that could support a lawsuit under these circumstances: A surgeon performs elective surgery on a patient. The patient later complains to the surgeon about the pains resulting from the surgery. The surgeon dismisses his complaints an

27. economics

According to the “guns and butter” example, if a country decides to spend more on military goods, which of the following will happen?

28. Help!!

What caused states to demand a constitutional Convention and explain why? What three issues caused the most conflict during the Constitutional Convention and why? How did the COnstitutional delegates solve these problems? Plese tell me good site and teach

29. History

How do i answer this question using the race method? you will discuss the ways in which the United States fought the Cold War economically, socially, and politically and which methods you believe were the most effective in combating communism.

30. biology

Aquatic organisms: A. have a waxy coating to prevent water loss B. may experience problems with water balance C. typically have a plentiful supply of nitrogen. D. never find light to be in short supply

31. physics

Before a collision, a 28 kg object is moving at +13 m/s. Find the impulse

32. math

ms sue will you help me if my coordinates are A o,4 B 4,4 C 2,0 D 0,0 THE DILATION IS A' 0,2 B' 2,2 C' 2,0 D' 0,0 what is the scale factor?

33. Chemistry

Calculate the molality of methanol in a solution prepared by dissolving 75.0 mL of methanol, CH3OH (d = 0.791 g/mL), in 150 g of ethanol, C2H5OH.

34. Chemistry

From the following: 1) pure water 2) 0.01 m solution of table sugar (C12H22O11) 3) 0.01 m solution of NaCl 4) 0.01 m solution of CaCl2 Choose the one with the largest van't Hoff factor and hence the lowest freezing point.

35. chemistry

at what temperature does 16.3 g of nitrogen gas have a pressure of 1.25 atm in a 25.0 - L tank?

36. Chem

At a particular temperature, Kc = 54 for the reaction If 1.0 mole of H2 and 1.0 mole of I2 are placed in a 5.0 L container, what would be the equilibrium concentration of HI?

37. Chemistry

What is the molality of a solution prepared by dissolving 2.00 mL of bromine (d = 3.103 g/mL) in 125 mL acelic acid, HC2H3O2 (d = 1.05 g/mL) Choose one answer. a. 0.301 b. 0.335 c. 0.296 d. 0.593

38. chemistry

A 6.00 M H2SO4 solution has d = 1.34 g/mL. What is the mass percent of H2SO4 in this solution?

39. HELP!

What caused states to demand a constitutional Convention and explain why? What three issues caused the most conflict during the Constitutional Convention and why? How did the COnstitutional delegates solve these problems? Plese tell me good site and teach

40. Algebra 2

The height h(t), in feet, of an airborne tee-shirt t seconds after begin launch can be approximated by h(t)= -15t^2+120t+10,0

41. chemistry

A 2.30 m solution of urea (CO(NH2)2; FW= 60.0) in water has a density of 1.14 g/mL. Calculate the percent mass of urea in this solution

42. Math

I need help. Name a pair of vertical angle.

43. Algebra

Does an inequality of the form ax > b always, sometimes, or never give a solution of the form x > c? Give examples to support your answer.

44. Math

State the theorem or postulate that is related to the measures of the angles in each pair. Then find the angle measures. m∠3=(23x+11)°,m∠4=(14x+21)° Can you teach me this problem?? Please...

how do i convert milligrams to grams- i am in fifth grade-easiest way please.

73. N/A

I'm just needing a question to be ask: If you were head of health informaton management department at a hosptial later an FBI agent came to you with a search warrant and place it in your hand. And he ask to speak with you about the hopital's health

74. government

what three issues caused the most conflict during the constitutional convention? Wheather to keep the Articles of Confederation or generate a completly new document, states rights and, Individual rights. Acording to the Word book Encyclopedia, Circa 1977.

75. Finance

What is the projects initial outlay? Should the project be accepted why or why not? New Caledonia Problem 35% tax bracket 12% discount rate Cost of new plant $9,000,000.00 Shipping and$350,000.00 Sales: Year Sales 1 125,000 units 2 140,000 units 3 190,000

77. English Writing

People believe in God because... And there is life on earth because... And people who believe in God think that God has put human beings on this earth because... Could you help me? I'm not English speaker so I don't know how can I write continue of these

78. vocabulary

As we returned to the dressing room after that terrible first half, the whole atmosphere seemed to be (pervaded, capsized) by defeat. Ans. capsized?? With eager students and able teachers, learning will (flourish, outstrip), even though the school building

79. math

Phil had an unpaid balance of $1,854.50 on his credit card statement at the beginning of December. He made a payment of$45.00 during the month. If the interest rate on Phil's credit card was 2.5% per month on the unpaid balance, find the finance charge

80. math

Alicia Eastman deposited $2,000 in a savings account at the Biltmore Bank paying 6% ordinary interest. How many years will it take for her investment to amount to$2,600?

81. Math

Sue has 8. Piece of sting each measure 6,5. How many inches of sting left

82. Art , Painting

This is my homework today.. I have to write it but I don't know how to write this.. so could you guys help me? Identify and analyze how the art element, Color, is present in the final outcome.

83. Chemistry

A Gaseous mixture contains 4.08g of oxygen and 2.78g of Nitrogen a)What pressure is exerted by the mixture inside a 100.0ml metal container at 150C. b) what pressure is contributed by the oxygen? (please show steps)

A company purchased an air conditioning system for $10,200. Shipping charges on the system are$875. Setup costs were $1,250. The system is expected to last for 5yrs and has a residual value at$2000. If I use the straight-line method to calculate

85. ‚g‚d‚k‚o�I�I�I

Give two examples of federalism in the United States. http://en.wikipedia.org/wiki/Federalism http://plato.stanford.edu/entries/federalism/ http://www.closeup.org/federal.htm =)

86. HELP!

Name and explain 3 problems of the Articles of Confederation. What is this question mean? and someone please give me some good site.

87. Math

19. Janet invested $26,000, part at 6% and part at 3%. If the total interest at the end of the year is$1,080, how much did she invest at 6%? $11,000$10,000 $9,000$16,000

95. Chem

Which direction will the following reaction in a 5.0 L flask proceed if Qp = 0.013? 2H2O(g) = 2H2(g) + O2(g) Kp = 1.6 x 10-5 Choose one answer. a. to the right because Q > Kp b. to the left because Q > Kp c. to the right because Q < Kp d. to the left

96. Chemistry

Which of the solutions has the greatest osmotic pressure? Choose one answer. a. 10.0 g glucose in 1.00 L at 298 K b. 10.0 g glucose in 1.00 L at 303 K c. 10.0 g glucose in 0.500 L at 298 K d. 5.0 g glucose in 1.00 L at 298 K

97. Science, Nature Science

Can you please give me three examples of things that photosynthesize that live in oceans?

98. statistics

Provide the Null and Alternative Hypothesis to test to be sure that a juice manufacturer is delivering exactly 12 fluid ounces, on average, for each 12 oz juice box.

99. Math

Determine whether or not the relation is a function (1,9)(2,10)(3,11)(4,12)