# Questions Asked onJune 5, 2011

1. ## Chemistry

A bag contains a mixture of copper and lead BBs. The average density of the BBs is 9.80 {\rm g/cm^3}. Assuming that the copper and lead are pure, determine the relative amounts of each kind of BB.

2. ## Chemistry

3 I- (aq) +H3AsO4 (aq) + 2 H+ = I3- (aq) + H3AsO3 (aq) + H2O (l) is found to be first order with respect to each of the reactants. write the rate law. what is the over all order?

3. ## Chemistry

Balance the equation in aqueous basic solution: As2S3(s) + H2O2(aq) → AsO43-(aq) + SO42-(aq) I normally understand how to balance redox equations, but this one confuses me because I would normally think that the As2S3 is being reduced to AsO4^3-, but

4. ## math

find the accumulated value of an investment of 25,000 for 4 years at an interest rate of 5%, if the money is a compounded semiannually; b. coumpounded quaterly; c. compounded monthly d. coumpounded continuously.

5. ## Chem

You made up a saturated solution of calcium sulfate (CaSO4). The temp is 25 degrees Celsius. You then add 5.00*10^-3 of sodium sulfate (NaSO4). What are the concentrations of calcium and sulfate after equilibrium is reached? The pKs of CaSO4 is 4.58. I

6. ## Math problems

i am an odd multiple of 50p, my number of pounds is double 18

7. ## english- literature

Which information does Elizabeth not report to John?a. The court has accused fourteen people of witchcraft. b. The court has condemned Sarah Osburn to be hanged. c. The crowd parts for Abigail like the sea for the Israelites. d. Mary Warren describes

8. ## history

2. What did the Greek intellectual triumph entail, and what were its effects?

9. ## Chem

Given the reaction: SO2(g) + NO2(g) = NO(g) + SO3(g) H = -42.6Kj How will the concentration of SO3 at equilibrium be effected by the following: a) Adding more NO2(g) b) Removing some NO(g) c) Increasing the temperature

10. ## science(chemistry)

an organic compound contains 49.3 percent carbon,6.84percent hydrogen and its vapour density is 73.molecular formula of compound

11. ## history

Describe how the Kushans, Sakas, and other inner Asian groups played important roles in world history.

12. ## Chemistry12

How will the equilibrium: Heat energy + CH4 + 2H2S = CS2 + 4H2 be affected by the following? a) A decrease in temperature? b) The addition of H2 c) The removal of some CH4 d) An increase in the volume of the container e) The addiotion of a catalyst. i know

13. ## calculus

Find the average rate of change of the function over the given interval. You must reduce and simplify your answer, if possible. a. f(x)=cot x, [pi/6, pi/2] b. f(theta)= -2 + cos (theta), [-pi, 0]

14. ## calculus

how do I find the derivative of f(x)= 4/ square root of x ? using the limit process?

15. ## english.. literature

In act two of the crucible 1 One of the chief conflicts established in Act Two is between A. John Proctor and Ezekiel Cheever B. Elizabeth Proctor and Mary Warren C. John Proctor and John Hale D. John and Elizabeth Proctor i chose A 2. what does elizabeth

16. ## Chemistry

Hi there - I'm going to post the question as written in my book. Three 20.0 mL samples of nitric acid are titrated with a 0.200 mol/L solution of sodium hydroxide. The results for the three trials are shown in the table below. What is the concentration of

17. ## Physics

A 1.5 uF capacitor is connected to a 9.0 V battery. Use PE=1/2C(change in V)^2 to find the energy stored in the capacitor.

18. ## Chemistry

How many grams of carbon dioxide will be made when 100 grams of methane burn in an excess of oxygen

19. ## history

Compare and contrast the Achaemenid and Mauryan Empires. What was their respective historical significance? How did each affect the world beyond its borders?

20. ## history

What did the Greek intellectual triumph entail, and what were its effects?

21. ## Statistics

A vending machine dispenses coffee into a twelve-ounce cup. The amount of coffee dispensed in to the cup is normally distributed with a standard deviation of .08 ounce. You can allow the cup to overfill 2% of the time. What amount should you set as the

22. ## maths

ben bought a car for £12,000 each year the value of the car depreciated by 10% what is the value of the car 2 years after he bought it?

23. ## world geography

007690RR, 007691, 007692, 007693 pls help me. penn foster exam for world geography.

24. ## maths

simn spent 2/5 of his pocket money on a computer game he spent 25% of his money on a ticket for a football match what is the fraction of his pocket money that he had left

25. ## Algebra plz check

Find all numbers for which the rational expression is undefined -12/5y. The rational expression is defined for every real number is this correct?

26. ## math

a class consists of 14 men and 16 women. A group of 5 is randomly chosen a) the probability of this group containing at least 2 women and at least 2 men? b) probability the group contains the same gender.

27. ## Math Probability

3) For years, ocean going ships have been using colored flags for signaling. By changing the order of the colored flags, the ships can send out different signals. If most ships carry six flags (each of different colors) how many different signals are

28. ## Psychology

In a classroom experiment, students were asked to place one paper clip in each hand. They were then instructed to add paper clips to the left hand until they were certain that the clips in the left hand weighed more than the paper clips in the right hand.

29. ## Probability

How many different three-digit numbers can be formed using the digits 1,3,5,7 and 9 if the digits may be repeated?

30. ## calculus II

Find the volume of the solid obtained by rotating the region under the graph of the function f(x)=x^8/9 about the x-axis over the interval [1,2].

31. ## Chemistry

the reaction is CO + SO3 CO2 + SO2, the rate law for this reaction is rate=k[SO3] and the mechanism is SO3 -> SO2 + O CO + O -> CO2 Which is the slow step? I have to find catalysts and intermediates and is O both catalyst and intermediate? If it isn't,

33. ## Spanish

44. Me gusta mucho el helado. Siempre lo ____ de postre. a. pide b. pido c. pides d. pedir D? 45. Me gusta leer. Por eso ________ saco libros de la biblioteca. a. a menudo b. mucho tiempo c. una vez d. punctualmente A? 46. Compraron los churros que los

34. ## literature

In act two of the crucible which becomes apparent during the course of ACT two? a. most people in Salem find the accusers uncreditable. b. more and more women are being arrested for witchcraft c. Hale wil realize the error of his way d. elizabeth will be

35. ## Chemistry

What type(s) of intermolecular forces allow CO2 to dissolve in water? Do CO2 and H2O have a relatively strong or weak attraction to one another? Explain. Please and thank you!!

36. ## health

What two minerals comprise table salt

37. ## Probability

1 a) What is the probability of you drawing three face cards from a well shuffled deck if you keep each card you draw? Since there are 12/52 face cards would it be first 12/52, then 11/51 then 10/50? I am confused about this b) What is the probability of

Prepare a 700- to 1,050-word paper in which you describe the use of statistics within your workplace or a company with which you are familiar. Address the following questions in your paper: • How are statistics used in your workplace? • What is one

39. ## health

How many eggs are produced each year in the United States

40. ## Algebra

The Office Jet printer can copy Janet's dissertation in 20 min. The Laser Jet printer can copy the same documents in 12 min. If the two machines work together, how long would they take to copy the dissertation? is 1.25 right?

41. ## science

A protein polypeptide chain exists in α-helical conformation in a solvent and it has a value of -30,000 deg cm2 dmol-1 for the mean residue ellipiticity at 222 nm ([θ]222) in the temperature range 20-50°C. On raising the temperature above 50°C,[θ]222

42. ## science 202

I take a violin and make an exact copy of it, except that it is bigger. The strings are identical except for the length; they have the same material and the same tension. If the new violin is 2.30 times the size of the original, at what frequency would the

43. ## Math - Logarithm

Solve the following equation. Please show all of your work. 5 ln 2x = 10

44. ## Language Art

I saw a young girl (stealing, stole, steal, steals) something from the shop. which answer should it be and why?

45. ## health

What is the website for the Food/> Borne/> Illness/> Education/> Center/>/>? What foods does the government say should be destroyed following Hurricane Katrina or any other hurricane or flood?

46. ## Algebra

Write the equation bellow in its exponential form. In(-x) =9

47. ## social studdies

posted this yesterday, some person replied. not sure if shes right. 1841. Describe what happened between Simpson and McLoughlin. In 1841, Simpson toured the area again and discovered that the fur trade was not expanding as he had hoped. He decided to

48. ## history

Discuss the major consequences of Alexander the Great's death on world history.

49. ## history

Explain how geography "controlled" early African history. Discuss the specific cases of Ghana, North Africa, the East African littoral, and southern Africa.

50. ## mathematics

Three times the reciprocal of the sum of two consecutive odd integers is 3/20. Find the two consecutive off integers.

51. ## History

One of the most effective forms of resistance that slaves employed against their masters was A. earning money to buy their freedom. B. not having children. C. working slowly. D. open rebellion. I believe it's C, my book doesn't explain it in great detail

52. ## language

What is the main theme in Death on the Ice by Cassie Brown?

53. ## Psychology

Uncle Billy fell asleep in front of the television again. Five minutes later a noise from the kitchen awakened him. He sat up looking a bit dazed and explained, "I was having something like a dream. I saw my first bicycle, Old Blue, just as bright and

54. ## Psychology

Will someone please let me know if I chose the right answer for my 10 questions? I will indicate my answer that I chose with (MY CHOICE) 1. Factors that distort the way the independent variable affects the dependent variable are referred to as:

55. ## geometry

in each circld, find the value of x. then find the given measure m

56. ## Physics

.A mass of 1.61 kg stretches a vertical spring 0.313 m. If the spring is stretched an additional 0.132 m and released, how long does it take to reach the (new) equilibrium position again?

57. ## History

Explain what the spread of Hellenism meant to the Greeks and what impact it had on the people of Asia, Africa, and Europe.

58. ## maths

5x10^2 divide by 7x10^4 what is the answer in standard form

59. ## Psychology

Kara heard the noise, but could not understand what was being said. Perhaps it was simply the humming of the machines that she heard? She was uncertain whether she should move toward or way from the sound. Kara is having difficulty with: 1. sensation 2.

60. ## english

Can anyone check my HOMEWORK for me? Its due today..thank you . I am writinfg an essay, 2 paragraphs with a minimum of 350 words. I am to explaining my point of view and what I plan to accomplish on my final essay for the sememester. I have chosen a Topic

61. ## Psychology

Although someone who is hypnotized may be compliant and susceptible to suggestion, it is clear that: 1. they are pretending and know exactly what they are doing 2. they will be able to recall the directions and events which took place after they return to

62. ## Psychology

A physiological support of hypnosis as a different state of consciousness is: 1. rapid eye movement initiated when a person is hypnotized. 2. a change in the electrical activity of the brain in hypnosis. 3. the sense of time removed. 4. reaction time slows

63. ## statistics

A 95% confidence interval for a population mean was reported to be 23,100 to 24,900. If the sample standard deviation is 5,808.26, what sample size was used in this study?

64. ## Physics

Use Kirchhoff's junction theorem to explain why the total equivalent resistance of a circuit is reduced, not increased, by connecting a second resistor in parallel to another resistor.

65. ## social studies

In what sense is violence seen as a cultural and social phenomena?

66. ## health

How did Gatorade get its name?

67. ## maths

what is the nth term for the following sequence which begins 7, 11, 15, 19, 23

68. ## English

Thank you very much. In point 1 I need to formulate my question better. As for the other points I'd like you to revise the language, especially in point 4. 1) Why is Wilde's "The picture of Dorian Gray profoundly allegorical? What does the picture

69. ## Chemistry

The question is "the reaction CO + SO3 CO2 + SO2 has two possible mechanisms. If the rate law for this reaction is rate=k[SO3] which mechanisms is correct? which step in THAT mechanisms is the slow step? and the mechanisms are: mechanism 1 CO + @ -> CO@

70. ## french

competer avec l'adjetif possessif correcte (1) Voila ________________ parents (2) Donne-moi __________________ bonbon? (3) Ou est _________________ papa? (4)

71. ## Math

justin had nickels and dimes in his pocket. when he counted out his change, he had 80 cent. if there are 12 coins altogether, how many dimes did he have?

72. ## Psychology

1. One of the addictive aspects of alcohol can be found in the difference between actual effects and perceived effects. Although alcohol is a depressant, many claim that it: (a)causes intoxication. (b)results is slurred speech. (c)produces feelings of

124. ## pre-cal

Find the terminal point determined by t.Please enter answer in ordered pair

125. ## health

What fruit contains 383 nanograms of melatonin

126. ## English

Can you please reconsider questions 1,2 and 3 and tell me if they are grammatically correct? 1) How are Joyce's Dubliners arranged and what are its two recurrent themes? 2) What features do all the characters in Joyce's "Dubliners" have in common? 3) Refer

127. ## Math

How would you tell if an equation is a funtion or not. I know that it has to have only one y-value for every x...but how do you identify this in an equation (rather than a graph) ie. y=1/2x-7 (how do i tell if this is a funtion or not)? Any help would be

128. ## US history

How were LBJ's war on poverty and Vietnam related?

129. ## science

if barium ions have a charge of 2= nd hydroxide ions have a charge of 1-, the compound calcium is what?

130. ## math

the diagnoal of a square has a length of 20 square root 2. what is the area of the square?

131. ## algebra

An online retailer had a sale that lasted 5 days. Approximately how many people visted the site during the sale? Assume that people who visited on more than one day were only counted once. Day 1 20,000 Day 2 25,000 Day 3 30,000 Day 4 25,000 Day 5 20,000

132. ## English Honors

"A Separate Peace" assingments. I just got out of the hospital. I just saw that these assignments will be due in a couple of hours. PLEASE HELP ME PLEASE!! I asked my teacher for a postponed date he said he can't because the payment for the school is paid

133. ## FRENCH

1. Tu te prépares pour l'école en combien de minutes? Je prépare pour l'ecole en trente minutes. 2. Est-ce que tu te rases chaque jour? How would I say.. No I do not shave ( Obviously not, since I'm a girl) Non, je ne me rase pas ? 3. Qu'est-ce que tu

134. ## com155

Do I have all the pronouns in() in these sentences? Are the sentences correct? 1. My friend Gloria has decided that (she)needs to go to debt counseling. 2. When Gloria and I discussed the matter (we) thought that it would be best to talk to (her) husband

135. ## Life science

How many teeth does a child have and how many teeth do adults have?

136. ## Life science

True or false, the healthiest position to sleep on for the baby while you're pregnant is on your back

137. ## statistics

The table below shows the number of girls who ran certain distance. -------------|---|----|---|----|----|--Distance(Km) | 5 | 10 |15 | 20 | 25 | -------------|---|----|---|----|----|--No. of girls | 2 | 1 | 3 | 4 | X |

138. ## physics

What is force of attraction between two students of mass 20kg,10meters apart?

139. ## maths

simply fully sp to the power 4 divide by 10p to the power 3

140. ## science

4. Why do we tend to assume that natural chemicals are safe while industrial chemicals are evil? Is this correct?

2c-13=5c+11

142. ## English

Thank you very much. Could you please check if the answer to question is grammatical? 1) At the beginning of the voyage the ship is caught in a storm then by mist and snow and finally is surrounded by ice. The storm is represented as a huge bird, chasing

143. ## science

if barium ions have a charge of 2= nd hydroxide ions have a charge of 1-, the compound calcium is what?

144. ## Quantitative Statistics

I have a sample population of 50. This number represents 60% of people in a particular state recevinh mental health services. The dependent variable is usage of mental health services. The independent variable is level of satisfaction with services. The

145. ## maths

Please help with this question.The mean weight of the contents of samples of 30 bags of sugar has standard error 0.008kg.The mean is 1.0042kg.Standard deviation is 0.042kg Choose the option that is closest to the probability, to three decimal places, that

146. ## Skittles

How does Skittles--the name create the brand image? The name doesn't mean anything.

147. ## Math

What is the probability that their IQ is above 90?

148. ## algebra 1

forty two is 14% of what number?

149. ## algebra 1

identify the x-intercept of the equation: -6x+3=y

150. ## algebra 1

solve the following question for x: {x+10} - 3=20

151. ## algebra 1

if f(x) = {x-8} find f{-3}

152. ## calculas

If f(x)=3x-1 and g(x)=2/3x+2 find: a) f(-3)+g(6) b)f(3)-g(2)

153. ## Math - Domain of Composite

Find the domain of the composite function . Please show all of your work. f(x) = sqrt(x); g(x) = 2x + 12

154. ## health

What is Ugli Fruit?

155. ## Math - Logarithm

Solve the following logarithm equation. Please show all of your work. log (5 + x) – log(x – 2) = log 2

156. ## Grammar usage

Jerry practiced his guitar chords every night, just (like or as) his teacher told him to do.

157. ## science(chemistry)

the density of 3 molar solution of sodium chloride is 1.25gm/ml.calculate the molality of the solution

158. ## Math puzzle

how would you go about solving this ive tryed everything. 2*2+7*3+4*3+3+4+3*2=? 231 is incorrect ty for tryin Ruby still need answer please n e 1

159. ## maths

sarah invited 80 people to a party only 48 of the people invited came to the partyy express 48 as a perecentage of 80

160. ## physics

What is force of attraction between two students of mass 20kg,10meters apart?

161. ## science

if barium ions have a charge of 2= nd hydroxide ions have a charge of 1-, the compound calcium is what?

162. ## Social Studies

What is agricultural transition?

163. ## Physics

if sound takes 4 seconds in air the hear the sound how far is it? if the temperature of water is 25 degrees C and air temperature is 23 degrees C

164. ## math

in triangle fgh,angle f=32, angle g= 100. find angle h

165. ## trig

How can I get rid of the square roots in this fraction? sqrt((2-sqrt3))/sqrt((2+sqrt3)) the answer is 2-sqrt3 but I don't know how they arrive at it.

166. ## algebra 1

factor the following: x^2 - 3x - 18

167. ## English

What literary device is this, "The rotten fruit squashed between my fingers when I squeezed it to hard"?

168. ## math

what does steeper than 30 degrees mean?

169. ## maths

abby and berry share £22 in the ration 3:1 how much do each person get?

170. ## Grammar usage

My family (use to or used to) live near the beach.

171. ## maths

expand 5(3w^2+4)

172. ## earth

how would global climate be affected if earth tilted on its axis

173. ## health?

I need stories about individuals that have abused Cocaine I neep help finding stories pleasse help me

174. ## Science

What are the different types of motion? I always get those mixed up and my older sister says that we will be studying that next year. Thanks for the help!

175. ## maths

simplify p to the power 4 times p