Questions Asked onFebruary 2, 2008

1. Chemistry

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

2. Chemistry

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

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

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?

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 =

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

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

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.

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

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.

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

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

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.

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.

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?

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

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

18. geometry

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

19. Math

Write 1,250% as a decimal.

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

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?

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 =

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

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

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?

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.

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.

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.

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.

32. algebra

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

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

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

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?

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

37. Algebra word problem

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

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

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

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?

41. HCA 230

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

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

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

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

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,

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

48. american goverment

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

49. English

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

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

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?

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.

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.

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

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.

56. Math

What is the reciprocal of 5 3/4?

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.

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.

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

60. grammar

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

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?

63. religion

why do sikhs share out sweets with friends and family?

64. aiu

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

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?

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.

67. algebra

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

68. Social Studies

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

69. algebra

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

70. aiu

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

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.

72. Math

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

73. Math

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

74. geography

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

75. Chemistry

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

76. Math

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

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?