# Questions Asked onJune 23, 2012

1. ## College Chemistry

What are the concentrations of Pb2+ and Cu2+ when the cell potential falls to 0.370 V? Given: A voltaic cell consists of a Pb/Pb2+ half-cell and a Cu/Cu2+ half-cell at 25degrees C . The initial concentrations of Pb2+ and Cu2+ are 5.30×10−2 M and 1.60 M,

2. ## chemistry

Titration of 50.00 mL of 0.0521 M sodium oxalate, Na2C2O4, required 38.71 mL of a potassium permanganate solution: 5 C2O42- + 2MnO4- + 16H+ = 2Mn2+ + 10 CO2 + 8H2O Calculate the molarity of the potassium permanganate solution.

3. ## Trigonometry

A person on a ship sailing due south at the rate of 15 miles an hour observes a lighthouse due west at 3p.m. At 5p.m. the lighthouse is 52degrees west of north. How far from the lighthouse was the ship at a)3p.m.? b)5p.m.? c)4p.m.? Please Show The Solution

4. ## Accounting 2

Journalizing liability transaction. The following transactions of denver pharmacies occurred during 2011 and 2012. Louis Welch is general manager of United Tanning Salons. During 2012, Welch worked for the company all year at a \$6,200 monthly salary. He

5. ## help !

Ricardo and Jane are standing under a tree in the middle of a pasture. An argument ensues, and they walk away in different directions. Ricardo walks 28.0 in a direction 60.0 west of north. Jane walks 10.0 in a direction 30.0 south of west. They then stop

6. ## chemistry

A 0.8378 g sample of calcium oxalate is heated to 1000oC, CaC2O4 = CaO + CO + CO2 Calculate (a) the moles of CaO remaining after ignition (b) the mmoles of CO evolved (c) the weight of CO2 produced.

7. ## Art

Can you suggest a site where you can practice modals(used to express probability and possibility)? Thank you, Writeacher. I also need to find a reading comprehension at intermediate level with two/three different post-reading activities. Thank you very

8. ## math

A rectangular block is 2 cm wider than it is high and twice as long as it it wide. Let x cm be the height of the block. Find an expression for the total surface area, A cm2, in term of x.

9. ## math

A person that fails to meet output standards could still have an efficiency measurement of more than 100%.

10. ## science (very important)!!!!

Calculate the final concentrations in mol/L of H+, Na+, Cl- and SO42- when the following three solutions are mixed together: 1000 cm3 of 0.10 mol dm-3 HCl 500 cm3 of 0.20 mol dm-3 NaCl 500 cm3 of 0.20 mol dm-3 of Na2SO4

11. ## vocab

the _ hunter will wield the bow and arrow at the archery contest?

If 3.4 mol of methane is heated so that the temperature of the gas increases 45 K while its pressure remains constant, how much heat is added to the gas?

13. ## maths

factorise: 1) x^4+10x^3+35x^2+50x+24 2) 3(a-b)(b-c)(c-a) 3) (a+b)^3-a-b

14. ## CHEM

g of alchol present in 2.45l of 75 proof gin density of ethonal is 0.798 g/ml =

15. ## physics

examples of: 1) acceleration against the direction of motion 2) acceleration in direction of motion 3)acceleration is uniform 4)acceleration is non-uniform

16. ## Physics

An object is released from rest at height h above the surface of the Earth, where h is much smaller than the radius of the Earth. It takes t seconds to fall to the ground. At what height should this object be released from rest in order to take 2t seconds

17. ## language

My went to the grocery store. She forgot her purse.

18. ## taxes

kaysia participates in a SIMPLE plan provided by her employer. In 2011, she contributes 6% of her \$40,000 salary, and her employer contributes 3% to the plan

19. ## spanish

1). What is a "cognate"? 2). Why is learning cognates the most efficient and rapid way to learn to read, speak, increase vocabularly and get high marks on tests in a foreign language? Bonus question: What is the relationship between "cognates" and

20. ## science

Calculate the final concentrations in mol/L of H+, Na+, Cl- and SO42- when the following three solutions are mixed together: 1000 cm3 of 0.10 mol dm-3 HCl 500 cm3 of 0.20 mol dm-3 NaCl 500 cm3 of 0.20 mol dm-3 of Na2SO4

21. ## science!

How much of a 0.10 M H2SO4 solution is required to neutralise 1g of NaOH? Express your answer in cm3.

22. ## Foreign languages

I just have one more doubts concerning the use of commas. 1)....... based on personal duty, hard work, respectability, and charity. Do I need to set the comma before and? 2) The telescreen transmits and receives all the time. (Do I need to include "data"?)

23. ## English

Interpretive Argument #1: The Epic of Gilgamesh The Nature of Life in Uruk Thesis: Assess the overall condition of life in Uruk. Supportive points: State the advantages and/or disadvantages of the following in topic sentences: Topic Sentence: Being a

24. ## physics

a missile is launched an angle of 26.5 with respect to the horizontal. if it travels in the straight line over the level Terran for 2 minute and its average speed is 6000 mile per hour. what is its altitude?

25. ## composition

In Weeks 9 and 10, you will develop an essay using definition as the rhetorical strategy. This week, you will complete your essay. Review the criteria for a definition essay. Continue with the essay you started in Week 9. Expand your definition by

26. ## ECONOMICS

Wilpen Company, a price-setting firm, produces nearly 80 percent of all tennis balls purchased in the United States. Wilpen estimates the U.S. demand for its tennis balls by using the following linear specification:

27. ## chemistry

a sample of methane contain 4.5x10 the power of24 h atom.calculate the mass methane

28. ## maths

write expansions: 1) (4/3x+3/4y)^3

29. ## interior decoration

Which one of the following statements accurately reflect a characteristic of selling? What characteristic of a good salesperson would help overcome a client's objection to a high price? Which of the following strategies would you use to attract customers

30. ## math

Mrs Sim gave pencils to every student in her class. If she gave each student 8 pencils, she would have 3 pencils left. If she gave 3 pencils to each student, she would have 188 pencils left. How mant students were there in Mrs Sims's class?

John who is an amateur golfer spends 3 hours every day practicing golf. What percentage of his waking hours does John spend practicing golf if he sleeps 9 hours a day? 24-9=15 3/15= 0.2% Answer I am unsure if the steps are right

If 1,790 Mega Watts of power, out of the 3,000 Mega Watts generated by a power utility, reach the destination, what percentage of the generated power reaches its destination? 1,790 - 3,000 = 1,210 1,790 divided by 1,210 = 1.4 Answer 1.4% Unsure

33. ## chemistry HELP!

How much of a 0.10 M H2SO4 solution is required to neutralise 1g of NaOH? Express your answer in cm3.

34. ## physics

An alpha particle initally moving at a speed of 7.10 x10^5 m/s goes through a potetial difference of 2500V. determine the final speed. thanks!

35. ## ECONOMICS

In an article about the financial problems of USA Today, Newsweek reported that the paper was losing about \$20 million a year. A Wall Street analyst said that the paper should raise its price from 50 cents to 75 cents, which he estimated would bring in an

36. ## math

Chris has 7 whistles. He needs 10 whistles for party. Which number sentence can help you find how many more whistles Chris needs?

37. ## algebra

Which of the ones below are expressions? 3b + c 56 - n = 8 5 + 6c 5 = 2y 4 = 6 -3m

38. ## math

Min's fish are sick,and she wants to add medicine to the tank. The base of the fish tank measures 40 cm by 25 cm.The tank is filled with water to a height of about 20 cm.How many drops of medicine should Min add to her tank? Reminder:1L=1,000cm squared

39. ## introducing to accounting

After the closing entries are posted to the ledger, each revenue account will have a) zero balance. b)debit balance c) a credit balance d)either a debit or a credit balance. MY ANSWER IS D BUT I AM NOT SURE :)

40. ## Art

Can you check these sentences, please? 1) You are forbidden to enter this area. You mustn't enter this area. 2) It wasn't necessary for John to go to work because it was Sunday. He didn't have to go to work.

41. ## Physics

During a training exercise a cannon ball is fired with a muzzle velocity of 84.9 m/s at an angle of 45o above the horizontal. Determine how far from the cannon the ball will land when it hits the ground.

42. ## economie

- A study of the causes of the American Revolution of 1776, the French Revolution of 1789, and the Russian Revolution of 1917 best supports the generalization that revolution is most likely to occur when?

43. ## physics

a television antenna is on the roof of the building. from a pt. on the ground 36.0 feet from the building , the angle of elevation of the top and the bottom of the antenna are 51 degree celsiusand 42 degree celsuis respectively. how tall is antenna?

44. ## english

incorrect cluses

45. ## interior decoration

What is pre-shopping? A cold call is a ? The primary purpose of qualifying clients is to?

46. ## pre-algebra

a math professor is teachin two classes. The first class has 100 student enrolled and the second class has 75 estudent enrolled if 3/4 estudent of the first class pass and 2/5 student of the second class pass. how many estydent pass in total

I need how to write Quality Management Plan

Quality Management Plan for followoing case: You are working for We Are Big, Inc., an international firm with over 100,000 employees located in several different countries. A strategic goal is to help improve the environment while increasing revenues and

49. ## interior decoration

Which one of the following statements describes benefit ? A self-employment tax is a? The best style of selling to adopt is ? When should you give your client a signer copy of the inventory list?

50. ## Psychology And Your Life

I am trying to construct a sentence using Maslow's theory on Physiological Needs. It can be personal or hypothetical.

51. ## database processing-computer management

The simplest form of binary relationship is : a)1:01 am b)1:N c)12:01:00 AM d)recursivE MY ANSWER IS B ,BUT I AM NOT SURE:)

52. ## American history

Within slave society, evidence suggested that the highest social status was ascribed to

53. ## math

find mean median and mode of 68, 79, 72 88 and 96

54. ## Physics

A lead ball has a volume of 94.3 cm3 at 19.3°C. What is the change in volume when its temperature changes to 34.3°C?

Min's fish are sick,and she wants to add medicine to the tank. The base of the fish tank measures 40 cm by 25 cm.The tank is filled with water to a height of about 20 cm.How many drops of medicine should Min add to her tank? Reminder:1L=1,000cm squared

56. ## algebra1

factor: 180s^2+300sf+125f^2