# Questions Asked onMay 9, 2008

1. ## chem

A 4.55L sample of water contains .115g of sodium ions. Determine the concentration of sodium ions in ppm if the density of the solutions is 1.00g/mL. Ok so ppm=mass of solute/mass of solution *10^-6 so we have the mass of the solute .115g and for the

2. ## Chemistry

For the following electrochemical cell: Fe(s) / Fe2+(aq) // MnO4–(aq) Mn2+(aq) / Pt(s) Which letter corresponds to the correct balanced chemical equation in an acidic solution? A. 5Fe(s) + 16H+(aq) + 2MnO4–(aq)--> 2Mn2+(aq) + 8H2O(l) + 5Fe2+(aq) B.

3. ## trig

1. 3cot^2 (x) - 1 = 0 My answer: pi/3, 2pi/3, 4pi/3, 5pi/3 2. 4cos^2 (x) - 1 = 0 My answer: pi/3, 2pi/3, 5pi/3, 4pi/3 3. 2sin (x) + csc (x) = 0 My answer: unknown lol i got to the part: sin^2 (x) = -1/2 4. 4sin^3 (x) + 2sin^2 (x) - 2sin^2 (x) = 1

4. ## chemistry

Why does the equivalence point occur at different pH values for the four titration studied? the four titrations were: 1. HCL with NaOH 2.HC2H3O2 with NaOH 3. HCl with NH4OH 4. HC2H3O2 with NHOH Okay so equivalence point is when the number of moles of acids

5. ## chemistry

Draw three repeating units of the condensation polymer made from ethanedioic acid and ethanediol. if anyone has a weblink that illustrates this may you please send it?

6. ## physics - oscillations

A mass m is at rest on the end of a spring of spring constant k. At t = 0 it is given an impulse J by a hammer. Write the formula for the subsequent motion in terms of m, k, J, and t. Assume x=0 at t=0. Thanks, -nik

7. ## physics - oscillations

A mass m is at rest on the end of a spring of spring constant k. At t = 0 it is given an impulse J by a hammer. Write the formula for the subsequent motion in terms of m, k, J, and t. Assume x=0 at t=0. Thanks, -nik

8. ## CHEM URGENT PLZ

1.Which of these substances has bent molecular geometry around the oxygen atom? Multiple correct answer may apply. a.water b.isopropyl alcohol (rubbing alcohol)** c.acetone** d.diethyl ether. 2.Which of these species are polar? Ignore slightly polar C-H

9. ## accounting

BDH Corporation, which makes only one product, Kisty, has the following information available for the coming year. BDH expects sales to be 30,000 units at \$50 per unit. The current inventory of Kisty is 3,000 units. BDH wants an ending inventory of 3,500

10. ## calc

If 4x2+3x+xy=2 and y(2)=–10 , find y'(2) by implicit differentiation. i keep getting the wrong answer for this problem evn when plugging 2 in for y.

11. ## Spanish

Can you help me with this. I really need help. Please correct me If any mistakes: In the blanks, I have to copy the verb(familiar and polite commands) and attach the approppiate pronoun. 1. Lleve estos libros al otro cuatro: = Llevelos estos libros al otro

12. ## Spanish

Please correct my work please: This is what I'm working on: Command form(imperative mood)negative familiar/polite. I have to change the following affirmative commands to the negative form. (write the word no, the object pronoun(s), and the negative command

13. ## Health Care

I am not seeing anywhere in my text how I would provide this answer could someone point me in the correct direction... It states this... Compose a list identifying the major components of health communication. Who is involved in each component? How does

14. ## accounting

Here is another one: BDH Corporation, which makes only one product, Kisty, has the following information available for the coming year. BDH expects sales to be 30,000 units at \$50 per unit. The current inventory of Kisty is 3,000 units. BDH wants an ending

What are the main formatting differences between the memo and the academic paper? In what ways do audience, purpose, tone, and structure affect the formatting of the memo and the paper?

16. ## math

Use implicit differentiation to find the equation of the tangent line to the curve xy3+xy=14 at the point (7,1) . The equation of this tangent line can be written in the form y=mx+b i don't seem to no how to find m or b

17. ## statistics

If X is a random variable which is normally distributed with a mean of 100, then P(X100) True or False?

18. ## statistics

A maker of tires for cars has a multitude of data to support the fact that the lifetime of their tires follows a normal distribution with a mean of 42,100 miles and a standard deviation of 2,510 miles. Find the probability that a randomly selected tire

19. ## calc

The equation of the tangent line to y=f(x) at a=2 can be written in the form y=mx+b where f(x) =4sinx/4sinx+6cosx i already got 3/2 for m but i cant seem to find out how to get the value of b?

20. ## Math

I can't solve this problem 4x-7=2x+11 x= ? I don't know how to do it! Help!

21. ## Math Fractions

Posted by Mary Mac on Friday, May 9, 2008 at 10:01am. I have this fraction: 6 2/9 + 1 3/4 - 3 5/6= Okay First I changed the mixed numbers into improper fractions. I got this: 56/9 + 7/4 + 23/6 Then I thought you have to find the least common denominator,

22. ## math

Kip and Celia began working for the same company in 1997. Celia earned \$19,000 per year, and Kip earned \$16,000 per year. Each year Kip received a \$1,500 raise and celia recived a \$1,000 raise. a. In what year will they earn the same amount of money. b.

23. ## fundamentals of policing

Post a 350- to 700-word response, describing the duties, functions, and responsibilities of local and state law enforcement agencies and explain the major differences between the two. Then, identify three federal law enforcement agencies. Describe their

24. ## Spanish

It would be nice if someone could help me with this. This is what I'm working on: Command form(imperative mood)-plural I'm filling in the blanks with the polite plural command of the verb in parentheses:Ok. Now I actually did the work. Just please correct

25. ## chem

What functional group(s) must be present in a monomer of a condensation reaction.

Below is your Week 5 Day 7 CheckPoint: Persuasion & Conformity Scenario Assignment. You are to write a 200- to 300-word critique of the response. Include a summary of the decision stated in your assigned response, whether or not this response has made you

asked by rose - Ms. Sue
27. ## math

what 3 bills can you use to make \$16 without using tens or coins?

28. ## Science

Identify the most important way heat is lost from the body during exercise? and these are the choices Evaporation Conduction Radiation Convection

29. ## physics

How would you do this? The K is 25.0 N/M The spring's max amount of elastic potential energy?

30. ## science

In general, populations have the ability to increase exponentially, but why do you think that most populations are fairly constant in size?

what does APA on microsoftword Word do ?

32. ## chemistry

I need to calculate the Ka of the acetic acid from two titration curves involving acetic acid. Then report the % error in each how do i go about this? what values do i need to know?

33. ## trig

how do you solve cot theta divided by csc theta is equal to cos theta?

34. ## Math/Fractions

I have this fraction: 6 2/9 + 1 3/4 - 3 5/6= Okay First I changed the mixed numbers into improper fractions. I got this: 56/9 + 7/4 + 23/6 Then I thought you have to find the least common denominator, which for 9,4, and 6 would be 36. Then I muliplied the

35. ## trigonometry word problems

A rectangle has a length of 19 cm, and a width of 16 cm. What is the length of its diagonal?

36. ## Diabetes

Can someone please name 2 methods of treatment for diabetes, please? Danke!

37. ## Economics

A. How can a tax on commodity be shifted forwards and backwards? B. What determines the amount of forward shifting that will occur?

38. ## Calculus - Integration

I came across this problem in my homework, and I was wondering if partial fractions would be rational for this problem. Int [(2x)/((x^2)^2)]dx If I don't use partial fractions, what would I use?

Between APA and MLA which is the most important Thank You

40. ## chemistry

Construct the following using molecules of your choice: a) a polyester and b) a polyamide. Each drawing should have four monomers and should be original in its structure. Your polymers can not be biochemical (carbohydrate, lipid, protein, etc.). Identify

41. ## chemistry

Suggest a type of reaction and the conditions required to breakdown polyamides into their monomers.

42. ## psy = revised

My response The conformity response has a lot of valid points. Donnie is in a band, is a musician, and the music environment that he is exposed to day in and day out just bring a lot of stress. The people in this industry tend to be exposed to a lot of

43. ## Spanish

How exactly will I do this? I seriously need help yet,I can't even attempt this. My teacher hasn't taught me this stuff as yet. So help would be appreciated. This is what I'm working on: Command form(imperative mood)negative familiar/polite. I have to

44. ## science

what discoveries have strengthened our understanding of evoultion?

45. ## physics

How would you do this? The K is 25.0 N/M The spring's max amount of elastic potential energy?

46. ## french

How do you say "it is always on time"...il est toujours a l'heure?

47. ## office practices/ medical

I was wondering if someone please help me with this question ? It does seem to make much sense to me. Open shelves are recommended for high-volume file rooms. Which of the following is a possible disadvantage of open-shelf files ? A increased operational

48. ## office practices/ medical

please check my answer thanks True or False A company that provides comprehensive health care services on a prepayment basis to voluntarily enrolled participants is called HMO I said True

49. ## V A Hospital

please check my answer thanks so much for your help True of False The V A hospital is most likely to use the Social Security Number as a medical record number in its filing system I said True

50. ## office practices/ medical

please check my answer thank you for all of your help in advance. If you know of any web-sites that may be helpful that would be great. True or False When medical records are moved forward to the most recent assigned medical record number a gap is

51. ## cartoon

can anyone find me a cartoon about no alcohol and depressents. I loked on google but none of them make sense to make that much.

53. ## math

.25(\$118,250.00) c) How much money will rent and utilities cost

54. ## Math

How exactly would I solve these problems? Write a function g(x)with the given transformations of f(x)=x to the 2 power. A. Down 2 B. reflection about the x-axis My teacher never taught me this, and my exam is within the next 2 weeks.

55. ## PHI

When a person makes a contribution to society, how does it affect us long term?

56. ## Medicare Part B

Please check my answer True or False Medicare part B involves supplemental medical insurance I said True

57. ## chemistry

Suggest a type of reaction and the conditions required to breakdown polyamides into their monomers.

58. ## pschology

what is the survey method and how is it applied

59. ## science

what makes the moon shine? what is the normal temprature of ourbody?

What does the MLA do and what does it mean?

61. ## simplyfying expressions (trig)

can anyone tell me how to do this? thanks! (sin (x) / 1 + cos (x) ) + ( cot (x) / 1 + cos (x) )

62. ## graphs

can someone help em find a graph showing current abuses or deaths of tranquilizers or barbiturates (depressants)

63. ## math

How do I do compound probability