Questions Asked on
February 2, 2008

  1. Chemistry

    Predict the order of increasing vapor pressure at a given temperature for the following compounds: CH3CH2CH2CH2OH HOCH2CH2CH2OH CH3CH2OCH2CH3

    asked by Lauren
  2. Chemistry

    which of the following compounds would you expect to exhibit only London forces? CCL4 CCLH CaI2 PCl5

    asked by Lauren
  3. biochemistry lab

    A) If you make up a solution of 50 mL of 0.1 M TRIS in the acid form, what will be the pH? B) If you add 2 mL of 1M NaOH to the solution in part A, what will be the pH? If it is needed, here is some addition information: TRIS pka= 8.3 mw of TRIS-HCL= 157.6

    asked by erin
  4. chemistry

    When Dr. Farrell was a graduate student, he once made up a pH 8.0 sodium acetate buffer. Why would the casual observer to this buffering faux pas come to the conclusion that he had the intellectual agility of a small soap dish?

    asked by matt
  5. chemistry lab

    Here are 2 questions I worked out, but need them checked. Also, can't get answer to another question correct unless question 1 is correct. Would you check the first 2 and help me with the third? 1) What is the pH of a 0.05 M solution of TRIS acid (pka =

    asked by ryan
  6. chemistry lab

    1) If your spectrophotmeter can measure n absorbance up to 1.5, what is the maximum concentration of NADH that you can measure without diluting? 2) If you add 3 mL of water to 1 mL of NADH, mix and get an absorbance of 0.2, what is the concentration of the

    asked by jennifer
  7. math

    Sneakers were on sale for 25% off their original price. Lola bought a pair of sneakers that had an original price of $43. She also paid a slaes tax 7.25% on the sale price of the sneakers. How much did Lola pay for the pair of sneakers? Round to the

    asked by mark
  8. chemistry

    A) If you make up a solution of 50 mL of 0.1 M TRIS in the acid form, what will be the pH? (pka of TRIS: 8.3, molecular wt: 121.1 g) B) if you add 2mL of 1 M NaOH to the solution, what will be the pH? Thank you.

    asked by matt
  9. chemistry lab

    An enzyme-catalyzed reaction is carried out in a 50-mL solution containing 0.1 M TRIS buffer. The pH of the reaction mixture at the start was 8.0. As a result of the reaction, 0.002 mol of H+ were produced. What is the ratio of TRIS base to TRIS acid at

    asked by alan
  10. chemisrty

    what is the concentration of [H+} in molars, millimolars, and micromolars for a solution of pH 5? In case you need this information: milli= 10^-3 micro=10^-6 Thank you.

    asked by alex
  11. chemistry

    An enzyme-catalyzed reaction is carried out in a 50-mL solution containing 0.1 M TRIS buffer. The pH of the reaction mixture at the start was 8.0. As a result of the reaction, 0.002 mol of H+ were produced. What is the ratio of TRIS base to TRIS acid at

    asked by alan
  12. algebra2

    Suppose it takes 3 days for a space vehicle to travel from Earth to the moon. About how long would it take for the same vehicle traveling at the same speed to Jupiter? Moon - 240,000 mi Jupiter - 391,000,000. The space vehicle would take how many days to

    asked by bb
  13. year 7 history

    i need to write 3 diary entries about the black death. i need to include the cures the causes what people first thought started the black death and the outcome. any help would be appreciated.

    asked by dewberry
  14. American Literature

    Using literary elements, compare and contrast Abigail Adams' letter to her daughter with Jean de Crevecoeur's essay from Letters from an American Farmer.

    asked by Rachel
  15. math

    When a figure is drawn in quadrant 2, and you reflect it over the x axis, do you reflect in quadrant 1 or four? I think you reflect it in quadrant 4. Also, where would you reflect it over the x axis when the original figure is in quadrant 1? And y axis?

    asked by mark
  16. geometry

    place each given figure in a coordinate plane. what are the coordinates of each vertex? a) a right triangle b) an isosceles triangle

    asked by anne
  17. MATH

    An entry level position pays 8 dollars per hour. A 4% raise is given at the end of each year of employment. What would the pay be after 3 years? My mom tried to help me and she got 8.998912 which we figured would round to 9 dollars. When i reworked the

    asked by lindsey
  18. geometry

    prove the following statements using a coordinate proof. the diagonals of a rectangle bisect each other.

    asked by anne
  19. Math

    Write 1,250% as a decimal.

    asked by greatdanelola
  20. math

    The old lion cage at the zoo was a square, with sides x meters long. For the part of the zoo's 50 birthday celecration, the zoo expanded the length and width. The expression for the total area of the new cage is (x^2+18x+81) square meters. Part 1:Robert

    asked by mark
  21. MATH

    An entry level position pays 8 dollars per hour. A 4% raise is given at the end of each year of employment. What would the pay be after 3 years?

    asked by Casey
  22. chemistry

    Here are 2 questions I worked out, but need them checked. Also, can't get answer to another question correct unless question 1 is correct. Would you check the first 2 and help me with the third? 1) What is the pH of a 0.05 M solution of TRIS acid (pka =

    asked by alan
  23. History

    The wall of reaction created in Europe by Metternich and other conservatives really collapsed with the A) Peterloo Massacre B) Decemberist Revolt C) Sucess of the Greek Revolution against turkey D) the 1830 JUly Revolution in france I think it is D

    asked by George
  24. algebra

    a long distance runer started running a course, running at an average speed of 2 mph. 1.33 hrs later, a cyclist travelde the same course at an average speed of 4 mph. how many hrs after the runner started did the cyclist overtake the runner? round answer

    asked by tina
  25. Finance

    An individual has $17000 income in period 0 and $60,000 income in period 1. If the individual desires to consume $30,000 in period 1, what is the maximum consumption in period 0 assuming the interest rate is 6%? I can't find a formula to solve this

    asked by Will Jr.
  26. economics

    How is the price of living CPI calculated and could this be used to determine inflation for a given year?

    asked by Meg
  27. physics

    In a series circuit, does the current only take one path? What type of circuit is used in computers. Is it (1)series (2) parallel or (3) periodic? Is the current in a parallel circuit the same everywhere?

    asked by Mrs M
  28. math

    Consider the following binomials. A=(x^2+5x) B=(6x+30) Part 1: Factor each binomial by finding the GCF. Then, add the two factored binomials to make a single expression. Part 2: Now add the original forms of binomial A and B together to make a trinomial.

    asked by mark
  29. Chemistry

    An element, M, reacts with oxygen to give an oxide of formula M3O4. A sample of M of 257 mg is placed in a 500.0 mL vessel containing oxygen at 0.991 atm and 23.0°C. After cooling the vessel back to the original temperature, the pressure was 0.813 atm.

    asked by Student
  30. Algebra

    The base of triangle is 4cmgreater then the height, the area is 48cm squared. Find the height and the length of the base.

    asked by Debbie
  31. Algebra Sq Rt

    This looks like a trick question (sqrt3+5 sqrt6)(sqrt3-5 sqrt6) Do I sq 3 or do I add 3 and 5 first? I think I have to do the same to both sides.

    asked by Micah
  32. algebra

    Divide 32x^8-32x^4+20x^2 by -4x^2

    asked by becky
  33. science(chem)

    Hi =) I have two Q's 1. What are the 2 purposes of using a caffine standard during the HPLC process? In general not talking about HPLC I would think a standard is for a)comparing to your own results to see how good your results came out. b) seeing if you

    asked by ~christina~
  34. Science (Chemistry)

    The total pressure in a flask containing air and ethanol at 25.7C is 878 mm Hg. The pressure of the air in the flask at 25.7C is 762 mm Hg. If the flask is immersed in a water bath at 45.0C, the total pressure is 980 mm Hg. The vapor pressure of ethanol at

    asked by Bob
  35. Social Studies

    What is social injustice on a personal scale? Any examples would be appreciated. Would someone attacking you and you use self defense against them a form of social injustice?

    asked by Pingu Head
  36. year 7 RE

    PLEASE could anyone help me . I need to find 6 JEWISH starters 6 JEWISH main courses and 6 Jewish deserts. thanks for your help

    asked by DANNY
  37. Algebra word problem

    A 30 inch TV set has a width of 24 inches. What is its height?

    asked by Micah
  38. accounting

    I am taking beginning Accounting. I have learning disabilities, so it is very difficult sometimes for me to keep up with the information in class. Once I understand it then I am fine. Can someone please help me understand how to balance this out? Thank you

    asked by Venice
  39. math

    Damien sets up a bucket to catch raindrops. The bucket can hold only 1 gallon. If each raindrop is made up of about 1/90 fluid ounceof water, how many raindrops will the bucket be able to hold? I need help with this question. I know that 1 gallon=128 fluid

    asked by mark
  40. Cultural Diversity

    I am having difficulty locating the answers to the questions for the following What are the implications for patients? What types of reform efforts are being implemented to improve caregivers' socialization skills? Will these reform efforts be effective?

    asked by Tiane
  41. HCA 230

    CORRECTION- THIS QUESTION IS FOR MY HCA 230 CLASS NOT CULTURAL DIVERSITY CLASS.

    asked by Tiane
  42. Intro Finance

    Not sure how to solve: Two Questions: (1)Cindy has income of $12000 in year 0. Calculate her income in year 1 if she wants to consume $26,000 in year 0 and $14,000 in year 1. Assume the interest rate is 4% per year. (2)Jonathan has income of $45000 in

    asked by Will Jr.
  43. algebra

    Find the perimeter of a polynomial with sides 3x 9 4x 6 6x+1 6

    asked by becky
  44. COM 135

    how you would use these steps to create the manual mentioned in this scenario. the steps are prewriting,writing rewriting. Explain the purpose and sub-steps of each step and how they relate to the manual. This is the scenerio.... As a customer service

    asked by Dawn
  45. accounting

    hey there, i was wondering if anyone could help me with the following questions. I would really appreciate your help . Multiple choice: A company obtained a patent for a drug it developed. The amount capitalized in asocciation with the drug patent will

    asked by Sarah
  46. Chemistry

    A tank of gas at 21 degrees C has a pressure of 1.0 atm. Using the data in the table answer the following questions. Explain your answers A. If the tank contains carbon tetrafluoride, CF4 is the liquid state also present? B. If the tank contains butane,

    asked by Lauren
  47. physics

    A man stands on the roof of a 10.0 -tall building and throws a rock with a velocity of magnitude 24.0 at an angle of 42.0 above the horizontal. You can ignore air resistance. Calculate the magnitude of the velocity of the rock just before it strikes the

    asked by Ava
  48. american goverment

    which of the following native american were Sioux leadrs except, geronimo, red cloud, crazy horse, or sitting bull.

    asked by lajade
  49. English

    Need a essay on Boo Radley from to Kill a mockingbird Help meeeeeeeeeeeeeeeeeee plz

    asked by Anonymous
  50. cosecant/secant

    the formula for secant is: 1/x the forumula for cosecant is: 1/y for the coordinates (negative square root of 2/2, square root of 2/2) how come the cosecant is square root of 2 and the secant is negative square root of 2? for my cosecant I got negative

    asked by Jen
  51. math

    When a figure is drawn in quadrant 2, and you reflect it over the x axis, do you reflect in quadrant 1 or four?

    asked by mark
  52. math

    Simplify the expression 6x x 2x^3 x 3x^2y^2/3x^3 x x^4y. I'm confused. The only thing I did was simplify 3x^2y^2/3x^3 to x^1y^2. I need help with the problem.

    asked by mark
  53. math

    Consider the following binomials. A=(x^2+5x) B=(6x+30) Part 1: Factor each binomial by finding the GCF. Then, add the two factored binomials to make a single expression. Part 2: Now add the original forms of binomial A and B together to make a trinomial.

    asked by mark
  54. Algebra Sq Rt

    to multiply the sq rt of 3 cubed by the sq rt of 9 cubed I first need to factor them? So 9 3 times =729? and 3, 3 times is 9. Then multiply the two? to get 6561? Or Do I multiply 3 times 9 for 27 and add the 3+3 on the left of the radicand for 6? Is my

    asked by Micah
  55. grammar

    does this word make sense in this sentence? domestic The minister saw from the statistics that imported goods were cutting into the domestic market.

    asked by Mackenzie
  56. Math

    What is the reciprocal of 5 3/4?

    asked by greatdanelola
  57. Social Studies

    How would you debate - 'That social injustice justifies violent action?" Negative, speaker 2. What's some points I could use please? I have plenty of examples.

    asked by Pingu Head
  58. Calculus

    I'm having trouble with this one. Problem: Find the equations for the planes parallel to x+2y-2z=1 and two units away from it.

    asked by Joseph
  59. math(EASY BUT CHECKING)

    for a spinner numbered one to ten, all outcomes are equally likely. What is the probability of getting a factor of six? I thought it might be 4/10 or 2/5 because i think a factor is a number that can go into another one. I often confuse those with

    asked by lindsey
  60. grammar

    how do you spell colesseum? i am not sure if i am right

    asked by Mackenzie
  61. math help

    please show me how to do this I am very lost I keep getting a wierd answer like 16/9 something like that please help me Solve the system by addition. 4x+6y = 9,8x-3y = -7

    asked by lost and confused
  62. Algebra Sq Rt

    I have a sq rt sign with a 3 on the left side. That means I'm looking for the cube of the number inside the square root? That number is 189xto the 8th power. So I multiply 189x 8 times before I find the cube or do I find the cube of 189?

    asked by Micah
  63. religion

    why do sikhs share out sweets with friends and family?

    asked by connor
  64. aiu

    What adjustments will need to be made to your business as a result of this?

    asked by Anonymous
  65. Algebra multiplying sq rt

    I need to use rational exponents to write the answer to: the cube root of x times the 4 root of 7x. there is a rule when the numbers on the radicand are different, yes?

    asked by Micah
  66. math

    Consider the following binomials. A=(x^2+5x) B=(6x+30) Part 1: Factor each binomial by finding the GCF. Then, add the two factored binomials to make a single expression. Part 2: Now add the original forms of binomial A and B together to make a trinomial.

    asked by mark
  67. algebra

    Would the problem (xz^3)^-4 be simplified to 1/x4z12?

    asked by becky
  68. Social Studies

    I need to know what the 57 US jurisdictions are and their 56 capitals. Thanks.

    asked by Christian
  69. algebra

    If I add x^5+5x^4 is the answer 6x^9?

    asked by becky
  70. aiu

    Benefits and drawbacks for your business as a result of their membership in MERCOSUR?

    asked by Anonymous
  71. grammar

    does this word make sense in the sentence? flustered The speaker went right on with his speech, in no way flusterd or disturbed by the jeers and catcalls of a few rowdy hecklers.

    asked by Mackenzie
  72. Math

    What is 15 1/3 divided by 3 2/7 in its simplist form.

    asked by greatdanelola
  73. Math

    what is the perimeter of a rectangle if the length is 5/12 and the width is 1/2

    asked by greatdanelola
  74. geography

    in 1776 how long did it take a ship to get from france to america?

    asked by khrystal
  75. Chemistry

    Besides the ideal gas law what is other methods to calculate the molecular mass of a substance.

    asked by Susi
  76. Math

    How do you find the height of a triangle on a coordinate grid?

    asked by Makayla
  77. hrm

    How do I design a reward system ( an employee reward system)

    asked by Dehlia Silva
  78. aiu

    Benefits and drawbacks for the country of Venezuela as a result of their membership in MERCOSUR?

    asked by Anonymous
  79. social studies

    how did the civil war end? who surrendered

    asked by Bri