1. Chemistry

A bullet weighing 235 grains is moving at a speed of 2.52 X 10^3 ft/s. Calculate the kinetcic energy of the bullet in joules ahd in calories. One grain equals 0.0648 g. Can someone help me out on this please K. E.= 1/2 mv2 . Convert m to kg Convert ft/sec

2. Algebra II

A train left Podunk and traveled north at 75 Km/h. Two hours later, another train left Podunk and traveled in the same direction at 100 km/h. How many hours had the first train traveled when the second train overtook it?

3. Statistics

The International Olympic Committee states that the female participation in the 2000 Summer Olympic Games was 42%, even with new sports such as weight lifting, hammer throw, and modern pentathlon being added to the Games. Broadcasting and clothing

4. Chemistry

Hydrogen sulfide, H2S is a foul smelling gas. It burns to form sulfur dioxide. 2H2S +3O2 ----> 2N2 +6H2O Delta H=-1036kJ Calculate the enthalpy change to burn 26.7 g of hydrogen sulfide.

5. Chemistry

if you could just help me set them up the would do me some good. Thanx A. In the single reaction of chlorine and potassium bromide, how many grams of potassium chloride can be produced from 200.g each of chlorine and potassium bromide? Identify the

6. Statictics

6. In 2000, the United Nations claimed that there was a higher rate of illiteracy in men than in women from the country of Qatar. A humanitarian organization went to Qatar to conduct a random sample. The results revealed that 45 out of 234 men and 42 out

7. Physics

"It takes a force of 109 N to lift a stone straight up. This force gives the stone an acceleration of 12 m/s^2. Calculate the mass of the stone." My physics teacher tried to explain this problem to us, but he explained it so confusingly that I still don't

8. Elementary Statistics help

It is generally believed that electrical problems affect about 14% of new cars. An automobile mechanic conducts diagnostic tests on 128 new cars on the lot. a. Describe the sampling distribution for sample proportion by naming the model and telling its

9. Chemistry

6ClO2 + 3H2O -> 5HClO3 + HCl a) If 71g of ClO2 is mixed with 19g of water, what is the limiting reactant? b) What mass of HClO3 is expected in part (a)? c) How many molecules of HCl are expected in part (a)? I completed part a and b but got stuck on part

10. CHEM

Butane, C4H10, is a component of natural gas that is used as fuel for cigarette lighters. The balanced equation of the complete combustion of butane is: 2C4H10(g) + 13O2(g)->8CO2(g) + 10H2O(l) At 1.00atm and 23*C , how many liters of carbon dioxide are

11. Chemistry

Hydrogen H2, is used asa rocker fuel. The hydrogen is burned in oxygen to produce water vapor. 2H2 + O2 ----> 2H2O Delta H= -484 kJ What is the enthalpy change per gram of hydrogen.

A car is traveling at 20m/s when it pulls out to pass a truck that is traveling at only 18m/s. The car accelerates at 2.0m/s^2 for 4.0 s and then maintains this new velocity. First it asked me to calculate the distance during acceleration so I used d =

13. English

What are similarities and differences of Sea and Prairie?

14. economics

Tell whether each of these expenses of a textile mill is a fixed cost or a variable cost, and why. (a) repairs to a leaking roof (b) cotton (c) food for the mill's cafeteria (d) night security guard (e) electricity

15. History

Why were the swahili traders in the east a threat to King Leopold's Congo?

16. Algebra

The larger of two positive integers is five more than twice the smaller integer. The product of the integers is 52. Find the integers. Must have an algebraic solution.

17. History

Why are drought desertification and overpopulation among the causes for the crisis/conflict in darfur? What is the connection of genocide and ethnic cleansing to darfur?

18. Statictics

2. Herpetologists (snake specialists) found that a certain species of reticulated python have an average length of 20.5 feet with a standard deviation of 2.3 feet. The scientists collect a random sample of 30 adult pythons and measure their lengths. In

19. Help

The countries of Europe report that 46% of the labor force is female. The United Nations wonders if the percentage of females in the labor force is the same in the United States. Representatives from the United States Department of Labor plan to check a

20. physical science

An elevator lifts passengers 30m in 24sec. The power is 15,000W. What is the total weight of the elevator and passengers?

21. Global warming

1) Explain the effect of clouds on global cooling. 2) Describe the relationship between carbon dioxide levels and deforestation. 3) Explain how rising global temperatures are connected to rising sea level.

22. math

Alfonso knows that the distance across the field from his home to Carla's home is 50 meters. A nice place to pick flowers is 40 meters directly east of his home and directly south of Carla's home. How far from Carla's home is the flower-picking spot?

23. Global warming

Explain the effect of clouds on global cooling Describe the relationship between carbon dioxide levels and deforestation. Explain how rising global temperatures are connected to rising sea level.

24. physics

The path of a projectile fired at a 30 degree angle to the horizontal is best described as 1.parabolic 2.linear 3.circular 4.hyperbolic

26. women studies

Hello, I need help in finding some answers to this question? How are families both places of comfort, security, and nurture, and at the same time places of domination, conflict, and violence. Thanks

27. Maths

3 part question. 1. 4 peaches and 3 grapefruit cost £1.30. Write down an algebraic equation to illustrate this. 2. 2 peaches and 4 grapefruit cost £1.20. Write down an algebraic equation to illustrate this. 3. Find the cost of 3 peaches and 2 grapefruits

28. world history

Does this sound good so far? i need an opinon I researched the genocide in Rwanda for my paper. In Rwanda, there are two major groups: The Hutu and the Tutsi. Even though the Hutu mad up 90% of the population in Rwanda, the Tutsi were basically the

29. Economics

Sorry, it's long. I've tried everything to solve this, I have no clue how they got any of the MR figures, I calculated MR and I got 0.5. Help please. * A drug company currently sells 3 million AIDS treatments in rich countries at P = \$80 per treatment. *

30. science

Name on example of each: ecological rehabilitation ecological mitigation ecological reclamation Please and thanks!

31. math

A 5% alcohol solution is mixed with 15% alcohol solution to make a 25mlof a 9% solution. How much of each alcohol solution is used?

So do you mean to say....Ferris wheels use motors, therefore meaning that electrical energy is present. Electrical energy from the motor is then turned into kinetic energy. Electricity, generated from a switch and wires, travel through the motor which

33. math

Solve the following equations giving any roots in terms of pi in the .......? interval -2pi ≤ 0 ≤ 2pi. a) 2cos²Θ + sin²Θ = 0 b) 2cos²Θ + sin²Θ = 1 c) 2cos²Θ + sin²Θ = 2

Q1: What rock comes before quartzite in the rock cycle? What rocks or rock could come just after quartzite in the rock cycle? Q2: A geologist finds a course grained rock with crystals arranged in rows. What can the geologist infer about how this formed and

35. Chemistry

If a question in the exam comes and asks me For Example what is the relative formaula mass of Copper Oxide Aluminiuim oxide Carbon Dioxide Is there a concept about the oxides or how do we work out the formula ?

36. Physics

the hubble telescope has a mass of 1.5 x 10^4 kg and its orbiting the earth 596 km above the ground surface.the earths radius is 6.38 x 10^3km. CAlculate a)the force of gravitation on the telescope due to the earth's pull. given: G=6.67 x 10^-11Nm/kg and

37. for Drbob222

how do I calculate pressure exerted by H2 in a Mg and HCl reaction? (weighing by redox)

38. Calculus Check

A survey of one thousand people found that 70% of the people have a CD player, 85% have a telephone, and 45.2% have a computer. At least how many people have all three objects? Is the answer 152?

39. ENGLISH 11

where are you going my mother asked you know you have to tell me where you're going before you go out i'm going out i replied where my mother demanded i'm just going to hang out with some friends.i need to know exactly where you're going and who you're

40. economics

A firm has two factories, one twice as large as the second. As the number of workers at each factory increases, which factory will experience diminishing returns first?

41. economics

Output Fixed Cost Variable Cost 1 \$5 \$10 2 \$5 \$27 3 \$5 \$55 4 \$5 \$91 5 \$5 \$145 (a) What is the total cost when output is 2? (b) What is the marginal cost of the third unit? (c) How much should this firm produce if the market price is \$24?

42. American History

Describe the social, economic, and political composition of the decade of corporate greed and how it affected the political climate of the 1980s. I'm having trouble catagorizing "social", "political" and "economic".

43. physics

A 2000 kg car negotiates a curve of radius 40.0m on a level road. The static friction coefficient between the tires and the pavement is 0.7. Calculate the maximum force of static friction for the car and the maximum speed with which it will be able to

44. physics

A 3.3 kg wooden block is placed on 22 degree inclined plane and is connected by a string that passes over a light friciton less pulley at the top of the incline and then attached to a hanging 3.0kg block.If the coefficient of static friction bet the 1st

45. Math

I need help with these questions: Copy the equations. Add brakcets to make each one true. a) 7 - 5 to the 4th power divided by 8 = 2 b) 3 x 2 - 5 to the 10 power = 1 c) 39 - 4 + 6 divided by 3 to the 2nd power = 3

46. Lunch

What should i take for lunch tomorro? i get hungry lots

47. ib math studies

i need a project idea for the internal assesment project. I want it to do something with sewing, like using equations in making a garment.

48. human risk assessment

Equal concentrations of heptachlor, a known human carcinogen, are found at two different sites. (a) The incremental risk is the same at the two sites (b) The incremental risk is different at the two sites (c) The incremental risk at the two sites might be

49. physical science

An elevator lifts passengers 30m in 24sec. The power is 15,000W. What is the total weight of the elevator and passengers?

50. bones

how many bones does a teenager have?

51. World History

what are the most important events that happened in the genocide in rwanda?

52. Chemistry

with a platinum catalyst, ammonia will burn in oxygen to gove nitric oxide NO. What is the enthalpy change for the following reaction? NO + 3/2 H2O -----> NH3 + 5/4 O2

53. english

How do I know if a syllable is stressed or unstressed?

54. Chemistry

Is the relative Formula mass for Aluminium Oxide simply : Al = 27 , O = 16 27+16 = 43?

55. maths

The diagram shows part of a regular polygon. work out how many sides the polygon has. (it is 156 degrees).

56. chemistry

for a manometer flask diagram, if ha = 134 mm, how do I convert to torr, Pa, and atm with the right amount of sig figs? Related to sig figs, how do I get the right amount of sig figs (which is 2) with 8339?

57. spanish

Cambie las frases en el presente a mandatos familiares. Incluya los pronombres cuando sea posible. MODELO: No comes los dulces. -> No los comas. 1. Tienes prisa. 2. Te duermes temprano. 3. Haces la cama.

58. Math

what is 10^-2? 10 to the power of negative 2

59. Science repost for iiii

science - iiii, Monday, October 29, 2007 at 8:08pm What test would you need to perform to prove that it is the combination of glucose and the Glucose Indicator Solution that changes color when heated and not just the glucose or the Glucose Indicator

60. math

Sorry the question didn't come out right. It was supposed to read. 9k + 6 is < or equal to 39.

61. History

explain how the European desire for profit affected the people of the Congo.

62. FRENCH

Last part of the story.. can someone proofread? Thanks! Especially to SraJMcGin! Le Grinch restant a indiqué Markey le suivre et il l’a conduit à une pièce avec aucunes fenêtres et aucuns sols. La pièce était remplie à ras bord des fées et des

63. english

what are examples of fate? like movies/books one example is Final Desitnation 3 does anybody have any other ones?

64. maths

The population of a country is 10 million in 1997 and increasing at a rate of 0.6 million per year. The average annual income of a person during 1997 was 16000 dollars per year and increasing at a rate of 800 dollars per year. How quickly was the total

65. math

How would you express f(x) = cos3(x) in terms of first powers only? Please explain the steps

66. math

For what values of s will the limit of x approach infininty for lnx/x^s.

67. math

1. 4x^2-13x=12 I need to solve this problem by factoring or using the quadtratic formula. I am stuck when using the quadtratic formula method. Please advise how to do this. 2. 5x^2+42=0 How many roots exist in this equation and what type are they?

68. Spanish

Question #3 Cambie las frases en el presente a mandatos familiares. Incluya los pronombres cuando sea posible. MODELO: No comes los dulces. -> No los comas. 1. Tienes prisa. 2. Te duermes temprano. 3. Haces la cama.

69. calculus

For a function f, let f*(x) = lim as h→0 be [f(x+h) - f(x-h)]/h a) Determine f*(x) for f(x) = cosx b) write an equation that expresses the relationship between the functions f* and f` where f` denotes the usual derivative of f

70. for Drbob222

thanks but i do need help to solve the third part also, I did get these equations but don't know how to put them together to solve the third. thanks for helping further!

71. Algebra

A tcar left Purm and traveled west at 70 km/h. Two hours later another car left purm and traveled east at 90km/h. How many hours had the first car traveled when they were 1420 km apart?

72. math

Is the greatest common factor of 4xsquared ycubed, 18xysquared answer - 2xysquared?

73. Math

factor each expression completely. if possible. Just checkin the * Ones 1. x^2+19X+90 * 2. x^2-16X+55 * 3. x^2-^6x-91 * 4. x^2+28x+195 * 5. x^2-29x+204 6. x^2+3x+154 7. 2x^2-5x-42 8. 3x^2-13x+12 9. 5x^2+43x-18 10. 6x^2+29x+35 Solve each equation 31.

2y^2+15y+7

75. math

For the following problem we are asked to find an equation for the conic that satisfies the given conditions: 1. Ellipse, foci (0, -1), (8, -1), vertex (9, -1) For the solution I got: [(x – 4)^2]/25 + [(y + 1)^2]/3 = 1 Is this correct?

76. math

dwrs can you show your work? Can figure out who you got the 3?

77. economics

How does a firm calculate marginal cost?

78. math

3x+4(x-8)-x=3/5(10x+15)

79. finance

why is WACC important to an organization? b. What impact does WACC have on capital budgeting and structure?

80. math

How would you express f(x) = cos3(x) in terms of first powers only? Please explain the steps

81. Chem

I don't get how to do this: What is the pH of the solution created by combining 11.30 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 mL of the 0.10 M HC2H3O2(aq)? What are the pH values if you take into account that the 8.00 mL of

82. Social Science

What are the most important facts to include when writing an essay on the genocide in Rwanda?

83. Health

When people with diabetes get injured(break a bone, get scraped,etc.) why does it take longer for their wounds to heal compared to someone without diabetes?

84. english

I'm writing 'actor's notes' for act 2, scene 4 of 'Twelfth Night' Orsino- And what's her history? Viola- A blank, my lord. She never told her love, But let concealment like a worm i'th'bud Feed on her damask cheek. She pined in thought, And with green and

85. Physics

Continue...previous question b)what normal force would the car experience on the top of a circular hill of radius 20.0m when it reaches the near horizontal section of the vertical curve with a speed of 12.0 m/s ? Draw app. free body diagram.

86. English

In what stories have characters claim the accomplishments of another?

87. Science

Combined with coal,this element is used in weapons?

88. Math

Would a scatter plot relating to the number of sweaters you own and your age have a positive or negative

89. spelling

not a smile, but a

90. MATH

how do you make a circle graph?what are the steps?i am a grade 7 student,I need help. Thanks

91. graphs

If I have info. that fits into distinct catergories and want to compare totals what kind of graph should I use? A bar graph?

92. math

draw a shape that can be modelled by the expression 5 x 3 - 2 to the 2nd power. Write a problem for the expressin and evaluate it. Help.....please....!!! ;-(

93. math

Low-voltage lighting is a popular feature of landscaping. Two pathways meet at 30 degrees to each other. One pathway has the lighting, and the first light is placed where the two paths meet. The distance between successive lights is 5m, and each has a

94. social studies

In most countries, what is the main responsibility of the government to create?

95. science

5 reasons that the eagle helps the ecosystem?

9k+6

97. history

How were ehtnic groups in the Central African region distinguished?

98. trigiometry

what is the basic unit in trigiometry

Why do you think some investors choose to buy index options?

100. science

what is the word for " to move freorm one object to another

101. Social Studies

Any sites on Bishop Tutu?

102. science

Explain the main factors that affect the Earth’s temperature.

103. s.s

what were the perspectives of the loyalist in the boston tea party

104. math

Find the integral of:? i) ∫[(e^[-x]) / (-3e^[-3x] - 3e^[-2x])] and ii) ∫[(e^[-2x]) / (-3e^[-3x] - 3e^[-2x])]

106. maths

Waht is 12 to the power 12 and a half

107. ENGLISH

WHAT ARE EXAMPLES OF ARISTOTELIAN TRAGEDY ,SHAKESPEAREAN TRAGEDY AND HEGELIAN TRAGEDY

108. D+T; (Control systems); mechanisms

is aircraft wings 1st class? if not then what is the answer?

109. alternative health

what are the cell builders

110. Psychology

What is the controversy surrounding full body scans and what is the dilemma this is creating for physicians? What are the dangers of full body scans?