Questions Asked on
August 4, 2008

  1. chemistry

    What is the equilibrium constant for the following reaction? 3A + 2B 2C

    asked by kayla
  2. chemistry

    A 55.0-g piece of copper wire is heated, and the temperature of the wire changes from 19 degrees C to 86 degrees C. The amount of heat absorbed is 343 cal. What is the specific heat of copper?

    asked by kayla
  3. LITERATUE

    if this be error and upon me proved,i never writ, nor no man ever loved

    asked by RONNIE
  4. chemistry

    A 10-g mass of krypton occupies 15.0 L at a pressure of 210 kPa. Find the volume of the krypton when the pressure is increased to 790 kPa.

    asked by kayla
  5. chemistry

    What is Dalton's law of partial pressures? Explain how this law relates to the fact that mountain climbers must carry tanks of oxygen when scaling high peaks.

    asked by Dan
  6. chemistry

    A rigid container of O2 has a pressure of 340 kPa at a temperature of 713 K. What is the pressure at 273 K?

    asked by kayla
  7. Physics

    A simple pendulum is 9.00 m long. (a) What is the period of simple harmonic motion for this pendulum if it is hanging in an elevator accelerating upward at 2.00 m/s2? I keep getting 6.7, but it's wrong

    asked by Elisa
  8. chemistry

    Calculate the concentration of a silver ion when the solubility product constant of AgI is 10^-16

    asked by kayla
  9. chemistry

    Describe the structure of the water molecule and indicate how this structure is responsible for many of the unique properties of this vital compound.

    asked by kayla
  10. statistics

    SAT scores are normally distributed. The SAT in English has a mean score of 500 and a standard deviation of 100. a. Find the probability that a randomly selected student's score on the English part of the SAT is between 400 and 675. b. What is the minimum

    asked by Joanne
  11. chemistry

    Which of the following usually makes a substance dissolve faster in a solvent? A: lowering the temperature B: decreasing the number of particles C: agitating the solution D: increasing the particle size of the solute

    asked by kayla
  12. chemistry

    A balloon filled with helium has a volume of 30.0 L at a pressure of 100 kPa and a temperature of 15 degrees C. What will the volume of the balloon be if the temperature is increased to 80 degrees C and the pressure remains constant?

    asked by Dan
  13. World History

    Who was the Isralite king known for his wise sayings, or proverbss? A. Sargon

    asked by Anonymous
  14. physics

    A bat flying at 5.0 m/s emits a chirp at 35 kHz. If this sound pulse is reflected by a wall, what is the frequency of the echo received by the bat? I keep getting the wrong answer, don't understand.

    asked by Elisa
  15. Math

    I think the answer is wrong online so I would like to know what the correct answer is before I teach a student! If it takes 6 cubes to build 3 steps, how many cubes will be needed for 11 steps? It sounds so easy but my answer doesn't match the answer

    asked by Teacher
  16. chemistry

    A mixture of gases at a total pressure of 95 kPa contains N2, CO2, and O2. The partial pressure of the CO2 is 24 kPa and the partial pressure of the N2 is 48 kPa. What is the partial pressure of the O2?

    asked by kayla
  17. chemistry

    Describe the parts of a calorimeter and the function of each part.

    asked by kayla
  18. chemistry

    The volume of a gas is 250 mL at 340.0 kPa pressure. What will the volume be when the pressure is reduced to 50.0 kPa, assuming the temperature remains constant?

    asked by kayla
  19. calculus

    For what positive numbers will the square of a number exceed twice the number?

    asked by Chan
  20. World History

    Is the weekly day of worship and rest called the sabbath?

    asked by Me
  21. matrices

    Let A be a 5 by 4 matris and suppose that the system Ax=b has a solution. Explain why the solution is unique if and only if the rank of A is 4. I said that it is unique becaue the rank is equal to the number of columns. Do you have a better explaination.

    asked by jen
  22. math

    questions involving domain and range... 1. Find the domain of the function f(x)=(3x+1)/(sqrt of (x^2+x-2)) andd. 2. Let f(x)= (absvalue(x))/x. Show that f(x)={ 1, x > 0 {-1, x < 0 Find the domain and range of f(x).

    asked by alk
  23. World History

    Who was the Isralite king known for his wise sayings, or proverbss? A. Sargon B. Nebuchadnezzar C. Tutankhmen D. Solomen

    asked by Anonymous
  24. english

    Identify examples of bias, fallacies, and specific rhetorical devices in the speech. How did the speaker address arguments and counterarguments? Were the speaker’s arguments effective? Explain your answers. Campaigner: There is only one man who can rid

    asked by Anonymous
  25. Chemistry- HWK CHECK

    1. A solution in which no more solid can be dissoved is referred to as ____. Answer: saturated 2.At constant pressure, heat can be referred to as (entropy, enthalpy, or free energy). Answer: enthalpy The measure of disorder or randomness of a system

    asked by Blair
  26. Physics

    Please help. I got 338.82 for the velocity and wanted to get the distance, but I can't seem to do it because I don't have the wavelength. Please help! A stone is dropped from rest into a well. The sound of the splash is heard exactly 2.20 s later. Find the

    asked by Elisa
  27. accounting

    What Role does accounting play in business operations and; how depentant is a business on its accounting department and; why?

    asked by Anonymous
  28. math

    temperature dropped from 4 degrees to -18 degrees, how many degrees did it drop

    asked by pat
  29. dt

    i need to make a poster about italian food and make a menu any help gratefully received thanks

    asked by murphy
  30. health

    What is the training effect? A. The tendency to suffer injuries as a result of too much exercise B. Shortness of breath and dizziness caused by overexertion C. An increase in the resting heart rate and a decrease in the stroke volume of the heart D. A term

    asked by MOE
  31. Math

    Factor the following completely x^4 – 625

    asked by Marilyn
  32. human resources

    What are proximal and distal goals? Which type of goals is more effective?

    asked by China
  33. health help please!!

    socialization process of caregivers. what are the implications for patients?

    asked by Marty
  34. Environmental Studies

    What special problems are associated with developing an EMS for a college or university compared to an industrial or military facility?

    asked by Thano
  35. science

    Is it necessary for kittens to get their uterus taken out so that they don't have kids? I mean, is it really bad for them if they don't? and will it hurt the kitten who is getting the operation? *also* is it scientifically proven that if you stay too close

    asked by Summer
  36. chemistry

    If a crystal added to an aqueous solution causes many particles to come out of the solution, the original solution was___? A: saturated. B: an emulsion. C: supersaturated. D: unsaturated

    asked by kayla
  37. World History

    The Egyptains believed that the pharaoh was the son of _______ A. Isis B. Osiris C. Bel D. Re

    asked by Me
  38. mathematics - problem solving

    Andy took a reading test.He read 97 words per minute.If a book has an average of 250 words on a page,how many pages can Andy read in one hour ?

    asked by ryan
  39. World History

    Using arificial means of bringing water to crops is called _______. A. adulation B. synagogue C. initiation D. inflation I know it's not A and I don't think it's C so I'm kind of leaning toward D, but I don't know for sure.

    asked by Me
  40. chemistry

    When 18 g of ethylene glycol C2H6O2 is dissolved in 150 g of pure water, the freezing point of the solution is ___ (degrees)C. ( The freezing point depression constant for water is 1.86(dgrees)C kg/mol. I know the formulas I just need to see it done step

    asked by Jared
  41. Comp II

    Where can I find persuasive essay topics

    asked by China
  42. Statistics (2 mc probs)

    I have the following two multiple choice questions that are really throwing me for a loop: 1. Based on 500 people a researcher calculates the 95% confidence interval for the population proportion p: 0.123

    asked by Joanne
  43. Algebra

    The costs of doing business for a company can be found by adding fixed costs, such as rent, insurance, and wages, and variable costs, which are the costs to purchase the product you are selling. The portion of the company’s fixed costs allotted to this

    asked by Kris
  44. Algebra

    The costs of doing business for a company can be found by adding fixed costs, such as rent, insurance, and wages, and variable costs, which are the costs to purchase the product you are selling. The portion of the company’s fixed costs allotted to this

    asked by Kris
  45. Algebra

    How do you know if a value is a solution for an inequality? how is this different from determining if a value is a solution to an equation?, write an inequality and provide a value that may or may not be a solution to the inequality

    asked by olabisi
  46. Chemistry

    The freezing point of a solution is A. lower than the freezing point of the solvent alone because higher temperature is required to accelerate solvent molecular motion enough to overcome obstructon by solute particles.. B. lower than the freezing point of

    asked by Blair
  47. Math

    (3x^2 +5x) - (2x^2 – 3x +2)

    asked by Marilyn
  48. Math

    (x + 3)(x^2 – 2x + 7)

    asked by Marilyn
  49. Chemistry

    The molarity and the molality of a solution prepared by dissolving 2.00 g of ethanol C2H5OH with 99.0 g of water to give a final volume 101 mL are ______Molarity and _______molality. How do I do this?

    asked by Blair
  50. human resources

    Out of three heuristic types, which one is most commonly used?

    asked by shelly
  51. com 140

    In additionto WritePoint and the Plagiarism checker, what other resources are available at the The Center for Writing Excellence? What information do these other resources provide? ?Identify which two online resources may be most useful in building your

    asked by ano
  52. Critical Thinking

    Identify any examples of fallacies in the following passages. Tell why you think these are fallacies, and identify which category they belong in, if they fit any category we’ve described. 1.Letter to the editor: “Andrea Keene’s selective morality is

    asked by Nikia walker
  53. accounting

    can anyone tell me how accountants are included when managers of business organizations formulate long-term plans?

    asked by Anonymous
  54. english

    What follows a linking or action verb? What modifies nouns or pronouns?

    asked by lamoura
  55. Binomal Theorem

    1A> What is the coefficient of x^(2r) in the expansion of (1-x^2)^n, where n is a positive integer ? 1B> Find the coefficient of (1+x)^7 (1-x) ^8 Thanks for your help :)

    asked by Tommy
  56. business

    You have recently been hired as a new manager hired into a failing division in a company. The product line is outdated and losing market share, inter-departmental communication is adversarial, and competition for corporate funding is fierce. How are you, a

    asked by Ronald
  57. algebra

    why does the inequality sign change when both sides are multiplied or divided by a negative number? give examples of translate sentences into inequation

    asked by olabisi
  58. literature

    It is always "safety first" when working at sea, because no fiisherman wants to be the one who doesn't return, leaving a grieving family behind. What does it mean for a fishermans family to be greiving?

    asked by Anonymous
  59. math

    what is a place value

    asked by jamal
  60. Precalc (LOGS)

    1. (e^x - 1 )/(x^2 - 1) < 0 2. The inverse of ln (3 - x) ? 3. Simplify x^3 - 3x^2 + 2 = 0 Any help would be GREATLY appreciated. Thank you so much for your time.

    asked by Joe
  61. Stats

    In a bumper test, three types of autos were deliberately crashed into a barrier at 5 mph, and the resulting damage (in dollars) was estimated. Five test vehicles of each type were crashed, with the results shown below. Research question: Are the mean crash

    asked by T
  62. algebra lll

    find the value: 5 plus 8 . 2 divide by 4 -11

    asked by angela
  63. calculus

    How do I find the domain of: y=squareroot of x^3-3x^2 ?

    asked by Chan
  64. chemistry

    Explain what a saturated solution is. Give a specific example.

    asked by kayla
  65. health

    A Patient in need of treatment for the correction of a malocclusion would visit a/an? periodontists endodontists orthodontists pedodontists Thanks

    asked by hotsuz21
  66. finance

    the company has agreed that the required contribution will grow by 3.2 percent per year. When should the company harvest the forest?

    asked by Sherrill
  67. accounting

    Why are ethics so important in the field of accounting?

    asked by Anonymous
  68. literature

    What are at least two things that look sleek?

    asked by Anonymous
  69. Accounting

    Use the Internet to select a publicly traded company that you believe works with cost information. • Due Date: Day 7 [Individual] forum • Organize your thoughts in a 2,100- to 2,800-word paper. Citations of original works within the presentation must

    asked by Weedro
  70. World History/Social Studies

    The Jews who lived scattered around outside of Judah are called A menorah B plethora C Diaspora D aurora I think that it is menorah

    asked by calico7
  71. AE

    What are the implications of NCLB on teachers; on students in the classroom; and on schools and school districts?

    asked by scooby91320002
  72. World History

    Sumerian women had the rights to buy and sell property and _______. A write wills B become rulers C go to school D run business I think it is A or D but I'm not sure at all

    asked by calico7
  73. Biology

    most polar molecules and ions cannot enter cells. why? many food particles are polar how do they get into the cell?

    asked by Courtney
  74. MAth

    What is the difference between an equation and an expression? Include an example of each. Can you solve for a variable in an expression? Explain. Can you solve for a variable in an equation? Explain. Write a mathematical phrase or sentence for your

    asked by dawn
  75. Psychology

    How do self-concept, self-esteem and self-identity differ?

    asked by Nikia walker
  76. Language Arts

    What do you have to do and where do you have to go to get a book published? what are the requirements?

    asked by Summer
  77. biology

    what is the the equation for photosynthesis?

    asked by joshua