Questions Asked on
September 19, 2008

  1. Chemistry

    Calculate the DELTA H(rxn), DELTA S(rxn), DELTA S(universe), DELTA G(rxn). For each system below indicate whether DELTA S and DELTA H are positive or negative. Then indicate if the reaction is entropy driven, enthalpy driven or neither. C3H8(g) + 2O2(g) =>

    asked by Zach
  2. Economics: Market Equilibrium

    Question: The market for shoes in 1997. Between 1997 and 1998, the equilibrium price of shoes remained constant, but the equilibrium quantity of shoes decreased. From this, you can conclude that between 1997 and 1998, the supply of shoes _______ and the

    asked by Anonymous
  3. chemistry

    To determine the approximate mass of a small spherical shot of copper, the following experiment is performed. When 140 pieces of the shot are counted out and added to 8.6ml of water in a graduated cylinder, the total volume becomes 8.8ml . The density of

    asked by tomi
  4. life science

    what is a characteristic of specialization

    asked by fran
  5. Chemistry

    What volume of 3.0M Na2SO4 must be added to 25ml of 1.0M BaCl2 to produce 5.0g of BaSO4? The answer is 7.1ml but I don't get it very well. I thought I could use mole ratio of the balanced equation, but it did not work. Thanks a lot!

    asked by Andrew
  6. chemistry

    How many moles of H2(g) will be formed in the reaction between 0.99mol CaH2(s)and 1.43mol water ?

    asked by kayla
  7. COM 140

    WRITE a memo from Joe Gilmore, Training Department Manager, to Christine Lancaster, Training Supervisor, regarding her idea for the next training series

    asked by LILSISTER
  8. chemistry

    Determine the number of moles of a) N atoms in 42.5g of Mg(NO3)2 b) N atoms in a sample of C7H5(NO2)3 that has the same number of O atoms as 12.6g C6H12O6

    asked by tomi
  9. English

    * Should I finish all this work in an hour? What is the meaning of 'in'? Does it mean 'after' or 'within'?

    asked by John
  10. history/chem

    can someone briefly explain what did aristotle and what did plato contribute to chemistry?

    asked by kelli
  11. Psychology

    How have you used the scientific process (unsystematic observation, building theories, and evaluating propositions) in your life to better understand your personality? Provide an example in your response. What does this question mean? I don't understand

    asked by Alex
  12. Basic: Demand and Supply

    Question: Can you please check whether or not my answer is correct? If not, can you please correct it? Scenario: The market for peanut butter in New York where over 1 million stores that sell peanut butter at any given amount. Suppose the price of bread

    asked by Anonymous
  13. Science

    What are the job demographics of a diagnostic medical sonographer?

    asked by Mariz
  14. Science

    What is the salary, top salary, and average annual salary for an diagnostic medical sonographer?

    asked by Mariz
  15. Pre-Calculus

    If: f(x)= radical x g(x)= x^2+1 What is the domain of f o g? I don't really understand how to answer this question.

    asked by Crystal
  16. Science

    Does a plant grow under ground or above ground or does the stem support the plant when it first began to sprout?

    asked by Deja
  17. algebra 2

    y=4/9x direct variation

    asked by save me
  18. business

    explain currency exchange

    asked by jay
  19. math

    five more than one third of a number is -2.Find the number

    asked by Joji
  20. math

    what is the factor of 200? what is the factor of 99?

    asked by brandy
  21. math

    what's the prime factorization of 293? what's the prime factorization of 525? and factorization of 216?

    asked by brandy
  22. Chemistry

    Indicate whether Delta S and Delta H is positive or negative. Then indicate if the reaction is entropy driven, enthalpy driven or neither. NaCl(s) + H2O(l) + Heat => NaCl (aq)

    asked by Yuval
  23. Writing an essay

    " If I am a Tomcat animal, What will i do?"

    asked by Prisha
  24. Chemistry

    The standard atom for the atomic masses of all the elements is the atom of carbon which has 6 protons and 6 neutrons (12C) and is assigned the atomic mass of exactly 12. Under this standard, the atomic mass of iron, atomic number 26, is 55.845 u and the

    asked by Anonymous
  25. math

    Round off 53 to the nearest 10.

    asked by Deja
  26. American History

    What did colonist make or create during the shortages of 1777?

    asked by Achsah Okeke
  27. math

    find the GCF of 60&1200

    asked by brandy
  28. Math

    Jim has a special keyboard with the alphabet and ten numbers. Jim is blindfolded and does not know the position of the keys. Determine the probablility if two keys are pressed and a number is pressed first and a letter second.

    asked by John
  29. School Learning Curve

    Can someone explain to me the features of the 'learning curve'. I only just found out that teachers grade people's work against other students in the class, and it's something to do with "scaling", especially in English. I'm just curious on how it works,

    asked by TK
  30. Criminology

    What are three crime prevention methods for property crime and three crime prevention methods for enterprise crime? And how successful is each prevention method? Are there statistics and anecdotal to show this evidence?

    asked by Bobby
  31. misc

    im sorry i know i have posted this before but i forgot to go back on this and look in the answer so now i cant find it. i was just saying that giving the first link on google doesn't really help and that's what you guys do the majority of the time.

    asked by mysterychicken
  32. Help!

    I am stumped with a problem we are supposed to help our 4th grader with ... Study the number of pairs: 3 - 8 ; 4 - 11; 5 - 14; 6 - 17; and the it has blanks down to 10 - 29; ... ok we get this part ... adding 2 more each set ... now the questions ... If 50

    asked by Frustrated mom! 4th grd MATH
  33. math

    The product of 2 consecutive is 48,find the number.

    asked by Ayo
  34. math

    Heather is buying a T-Shirt for $8. Sales tax is 8 1/4 cents per dollar. How much will Heather pay in sales tax on her purchase?

    asked by heather
  35. homework


    asked by Anonymous
  36. religion

    tell me bout gods and eves relationship.

    asked by blahhh;
  37. social studies

    how do trres give us oxygen and how?

    asked by katie
  38. science

    What isthe missing word?The Heart has some ----- tissue in it.

    asked by tiff
  39. Math

    how do I find the perimeter of a trapezoid

    asked by Julie
  40. 9th grade

    ineed help! why did robert hooke's cork cells appear to be empty?

    asked by melphie
  41. Education

    I'm to create a hand printed painted to match my skin tone. I'm not sure on what kind of paint to use or where to get it it. I have also to write a one page reflection on creating my skin color and reflect on how this project might relate to students

    asked by Will


    asked by QUINCE
  43. chemistry

    Assuming the volumes are additive, what is the [Cl-]solution obtained by mixing 210mL of 0.600M KCl and 630ml of 0.385M MgCl2 ?

    asked by jay
  44. Project

    I have to do a project on energy efficient ways to run cars. First I have to pick a car and tell about how it runs. I also need statistics to prove my findings. If anyone knows a good web page or pages, please feel free to tell. Thank You.

    asked by Jennifer
  45. English

    * Can you send this fax for me? What is the meaning of 'for' in the sentence above? #1 or #2 or another? 1. with the object or purpose of place of; instead of

    asked by John
  46. sparta&athens

    how do they compare and contrast?

    asked by Anonymous
  47. math

    1 kilometer =

    asked by jim
  48. Introduction to Healthcare

    What are two roles of medical staff and two roles of hospital administration that ar consider most important any why?

    asked by Nikia walker
  49. COM/220

    Trying to create a thesis. Topic is on Cancer. Breast Cancer. Can someone help please. Need ASAP. Thanks.

    asked by D
  50. math

    factor completely 32-2t^4

    asked by jennifer
  51. math

    factor completely 12x^2 + 52x + 35

    asked by jennifer
  52. math

    factor completely x^4y + 216xy^4

    asked by jennifer
  53. math

    factor completely (x+9)^2 -5 (x+9)-6

    asked by jennifer
  54. math

    factor completely Z^2 - 18Z + 81 - 25x^2

    asked by jennifer
  55. MATH


    asked by ERICA
  56. MATH

    Solve 6x^2-5x+1=0

    asked by Anonymous
  57. MATH

    Solve (2s + 5)(s + 1)= -1

    asked by Anonymous
  58. com220

    Finding Evaluating and Utilizing Credible Information: Bias, Rhetorical Device, and Argumentation: the University Library Interactive Tutorial; the center for Writing Excellence; and Appendix D

    asked by Axia
  59. internet security

    Where can one go to download free and legal music without a catch? Is there truly such a site?

    asked by Diana
  60. Geography

    what large land feature lies between the mississippi river and the rocky mountains?

    asked by Kim
  61. Calculus

    f(x) = {x^3 - 1, x> or equal to -1 {2x,x-1 f(x)

    asked by Billy
  62. accounting

    how can information on a classifed balance sheet help indicate the future success or failure of a business?

    asked by mrs johnson