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. 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
  3. 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
  4. Geography

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

    asked by Kim
  5. 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
  6. 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
  7. 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
  8. homework


    asked by Anonymous


    asked by QUINCE
  10. math

    factor completely x^4y + 216xy^4

    asked by jennifer
  11. 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
  12. 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
  13. 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
  14. 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
  15. math

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

    asked by Joji
  16. math

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

    asked by brandy
  17. 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
  18. 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
  19. math

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

    asked by Ayo
  20. 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
  21. COM/220

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

    asked by D
  22. math

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

    asked by jennifer
  23. Calculus

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

    asked by Billy
  24. accounting

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

    asked by mrs johnson
  25. 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
  26. life science

    what is a characteristic of specialization

    asked by fran
  27. math

    find the GCF of 60&1200

    asked by brandy
  28. 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
  29. science

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

    asked by tiff
  30. 9th grade

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

    asked by melphie
  31. MATH


    asked by ERICA
  32. 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
  33. Science

    What are the job demographics of a diagnostic medical sonographer?

    asked by Mariz
  34. Science

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

    asked by Mariz
  35. 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
  36. 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
  37. algebra 2

    y=4/9x direct variation

    asked by save me
  38. business

    explain currency exchange

    asked by jay
  39. math

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

    asked by brandy
  40. Writing an essay

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

    asked by Prisha
  41. math

    Round off 53 to the nearest 10.

    asked by Deja
  42. American History

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

    asked by Achsah Okeke
  43. 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
  44. 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
  45. religion

    tell me bout gods and eves relationship.

    asked by blahhh;
  46. social studies

    how do trres give us oxygen and how?

    asked by katie
  47. Math

    how do I find the perimeter of a trapezoid

    asked by Julie
  48. 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
  49. 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
  50. 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
  51. 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
  52. sparta&athens

    how do they compare and contrast?

    asked by Anonymous
  53. math

    1 kilometer =

    asked by jim
  54. 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
  55. math

    factor completely 32-2t^4

    asked by jennifer
  56. math

    factor completely 12x^2 + 52x + 35

    asked by jennifer
  57. math

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

    asked by jennifer
  58. history/chem

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

    asked by kelli
  59. MATH

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

    asked by Anonymous
  60. MATH

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

    asked by Anonymous
  61. internet security

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

    asked by Diana
  62. 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