# Questions Asked onOctober 19, 2009

1. ## chemistry

In the following experiment, a coffee-cup calorimeter containing 100 mL of H2O is used. The initial temperature of the calorimeter is 23 degrees Celsius. If 4.00 g of CaCl2 is added to the calorimeter, what will be the final temperature of the solution in

2. ## statistic

Assume that the salaries of elementary school teachers in the United States are normally distributed with a mean of $34,000 and a standard deviation of$2000. What is the cutoff salary for teachers in the bottom 10%?

3. ## AP Chem

A student placed 17.5 g of glucose in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100. mL mark on the neck of the flask was reached. The flask was then shaken until the

4. ## Physics

1.A 24 kg crate initially at rest on a horizon floor requires a 75 N horizontal force to set it in motion, once the crate is in motion, a horizontal force 53 N keeps the crate moving with a constant velocity. Find the coefficient of kinetic friction,

5. ## Physics

you slide a 325-N trunk up a 20.0 degree incline plane with a constant velocity by exerting a force of 211 N parallel to the incline plane a)what is the component of the trunk's weight parallel to the plane ? b)what is the sum of your applied force

6. ## world history

How did the french revolutionary army help to create modern nationalism?

7. ## physics

a girl pulls a wagon along a level path for a distance of 15.0 m. the handle of the wagon makes an angle of 20.0 degrees with the horizontal, the girl exerts a force of 35.0 N on the handle. Friction provides a force of 24.0 N. Find the net work done on

8. ## chemistry

When 50 g of silicon dioxide is heated with an excess of carbon, 32.2 g of silicon carbide is produced. what is the percent yield of this reaction? How many grams of CO gas are made?

9. ## FINANCE

Cash conversion cycle American Products is concerned about managing cash efficiently. On the average, inventories have an age of 90 days, and accounts receivable are collected in 60 days. Accounts payable are paid approximately 30 days after they arise.

10. ## math - really easy

in the local coed softball league, the male to female ratio is 6:6. If there are 160 players in the league, how many are female? I know the answer is 80. but how the heck do I set up the problem correctly?

11. ## math (binomial exp)

the Q is : Given that (1+ax)^n = 1 + 30x +375x^2+.... find the values of the constants a and n . I know that : (i am writing (n 1) as the coefficient of n) (n 1) *ax = 30x (n 2) *(ax)^2 = 375x^2 which can be written as (n 1)* a = 30 (n 2)*a^2 = 375 I

35. ## world history

whom did the committee of public safety consider to be enemies of the state?

36. ## another bio q

what forms from a piece of membrane breaking loose from cell membrane

37. ## AP BIO

a scientist plans to use a microtome to cut sections of a particular type of tissue so then that typical cell will be cut into about 20 sections. to help him make careful observation of internal cell structures, he considers staining the sections with a

38. ## Physics

A baseball player hits a home run that just barely clears the 12m high fence in right field, 94m from home plate. If the ball was at a height of 1m when hit, and its initial path after it left the bat was at an angle of 35 degrees above the horizontal,

39. ## chemistry

Write formulas for each of the following binary molecular compounds c. tetraphosphorous decoxide d. diarsenic trisulfide

74. ## math statistics

The average price of a gallon of unleaded regular gasoline was reported to be $2.34 in northern Kentucky (The Cincinnati Enquirer, January 21, 2006). Use this price as the population mean, and assume the population standard deviation is$.20. 1. What is

75. ## Physics

Two forces F1 and F2 act on ab object. It accelerates in a particular direction. Under what circumstances can you predict the direction of force F1 regardless of the specific value of Force F2? My ans: When F2 is weight but I am not sure

141. ## chemistry

Name each of the following ions: b. ClO3- d. SO42- f. CO32- h. CH3COO- i. HCO3-

142. ## Algebra 2 URGENT

Simplify: 2x+5/4x^2+2x-5/10x Please Show All Work!

143. ## math

1/2x - 1/4y= 7/2 3/4x + 1/3y= 19/2 To change into y=, do i multiply the top one by by 1/4 and the bottom one by -1/3?

144. ## Math

Estimate by rounding each term to the greatest place: 78.17-37.52 Need to show my work

145. ## history

how did the lives of slaves differ from those of the free in the united states

146. ## history

how did the lives of slaves differ from those of the free in the united states

147. ## Math Analysis

Tell if the function is symmetric with respect to the x-axis, y-axis, and origin. 3. 8x^2 - 2y^2 = 12 ==> I got that it was symmetric to both the x- and y-axes. Is this right? 4. 5x^2 - 3y^2 = 18 ==> I can't get anywhere with this equation -- I'm getting

148. ## MATH

MICHAEL(M) IS 1 YEAR OLDER THAN TWICE HIS BROTHER GREGS AGE. IF GREG IS G YEARS OLD, WRITE AN EXPRESSION FOR MICHAELS AGE

149. ## Grammar and Composition

can someone please give me a good quote. or maybe a website that has quotes. i just need one quote..about anything

150. ## Earth Scince

Can crude oil burn in the Earth if it comes in contact with magma?

151. ## Family Report

What should i put in a report about my family?

152. ## Physics

Suppose an ice block is heated what are the noticeable effect that the heat must have caused to the ice block.

1.which country had more than a dozen colonies along the atlantic coast by the mid 1700s

154. ## Essay Writing

Corey wrote the first draft of his essay. What is the next step before he revises it? A.Proofread the essay for errors. B.Reorganize the material. C.Leave it alone for a few days. D.None of the above. .I chose A.

155. ## essay writing

choose the most effective thesis sentence from the following: A. I learned a valuable lesson. B.Life is full of valuable lessons. C.The saying"honesty is the best policy"is a valuable life lesson. D.Valuable lessons are important in life. .I choose C.

156. ## Geography

8. The major cause behind the Israeli invasion of Lebanon was a. to gain more territory b. to drive out the PLO militia bases from southern Lebanon c. to defend Judaism d. to take control of rich oil deposits B 9. The Empty Quarter desert is located in a.

157. ## math

buying a house supposed you are in the market for a new home and are intersted in a new housong community under construction in different city. the sales representative informs you that there are two floor plans available, and that there are a total of 56

158. ## Math

How do i change these into y=? 3x – 2y = –1 --> -2y= -1-3x 5x + 2y = 25 --> 2y= 25-5x

159. ## Algebra 2 URGENT

Simplify: 2x+5/4x^2+2x-5/10x Please Show All Work!

Do you think Proposition 200 will affect the U.S. economy if it is widely adopted throughout the country? Why or why not?

161. ## Math

Write the numeral in base ten. 7001eight.

162. ## Spanish

Would someone be willing to proofread my essay in Spanish? It's less than a page long. It'd be great if you were somewhat fluent, I'm awful at Spanih grammar =[

163. ## Math

1/2x - 1/4y= 7/2 3/4x + 1/3y= 19/2 To change into y=, do i also multiply by 1/2 and -1/2?

the answer for each is a cell part what is the powerhouse of a cell & site of ATP production? what supports the shape of the entire cell what is involved in muscle contraction in larger organisms

165. ## Algebra 2 URGENT

Simplify: (1)/(z-4)-(1)/z+4

166. ## MATH!

1/2x - 1/4y= 7/2 3/4x + 1/3y= 19/2 To change into y=, do i multiply the top one by by 1/4 and the bottom one by -1/3?

167. ## Algebra 2 URGENT

Simplify: (1)/(t^2+t)+(1)/(t^2-t)

168. ## Algebra 2 URGENT

Simplify: (a-b)/(a^-1-b^-1)

169. ## Math

Estimate 4.8, 10.1 and 0.7 to the nearest whole number.

170. ## guess and check

there are 42 question on lindas test. sum of the questions are 2 point and sum were 3 points. she got a perfect score. how many 2 question where there and 3 point questions were on lindas test

171. ## Steve

I have no idea how to do this: h t t p : / / t i n y u r l . c o m / y f e 9 8 s d

172. ## health

does CHAMPVA provides an adequate level of health insurance for participants.

173. ## english

it's a quote u have 2 explain it in two paragraphs "when 2 friends are arguing right next two you it is best to be friend with your self"

174. ## Physics

Suppose an ice block is heated what are the noticeable effect that the heat must have caused to the ice block.

175. ## Biology!

1. Urea is made where? Is it in the kidneys or the liver? 2. Which trophic level gets the least amount of energy? a) producers b) herbivores c) carnivores d) decomposers I think the answer is c, but i'm not sure if it's right.

176. ## MATH 116

You are planning to spend no less than $6,000 and no more than$10,000 on your landscaping project. Write an inequality that demonstrates how much money you will be willing to spend on the project. How can I write an equation to fit this? $10,000=$6,000-n?

177. ## science

I need help on this equation: -5(-3n+4)-12=13

179. ## Geography

1. How did the Israelis overcome the challenge of limited farming? a. by developing trade b. by growing fewer crops c. by developing oil resources d. by draining swamps and building irrigation systems D Thanks -MC

180. ## Grammar

corrrected? The new heart clinic is located at 555 NW First Street, Seattle, Washington 98104. He arrived at the hospital with a heavily bleeding gunshot wound. Differential diagnoses include: Diabetes, adult-onset Cholelithiasis, acute Endocarditis,

182. ## science

Grande and Petite: The size of particles that can pass through a membrane.

183. ## Math

Build a 9-digit numeral write 2 in the hundreds place 5 in the ten thousands place 7 in the millions place 6 in the hundred millions place and 3 in all other places

184. ## Algebra 2 URGENT

Simplify: 1/u^2-2u-1/u^2-4

Ø In what ways are purpose, audience, tone, and content different for interpersonal and business communication? Provide specific examples to support your answer.

186. ## math

Use the definition of less than to show each of the following a. 2 < 4 b. 3 < 100 c. 0 < 3

187. ## Socials

I have to summarize what "The March of the Women" was about, from this: March of the Women: On October 5, 1789, a crowd of housewives in Paris, and some men disguised as women marched to city hall and demanded an end to the bread shortage and high prices

188. ## Algebra 2 URGENT

Simplify: 1/u^2-2u-1/u^2-4 Please Show All Work!

189. ## CRT 205

State your stance on the Terri Schiavo case, and identify the moral value judgment that influenced you to choose your stance.

190. ## algebra

Write an equation in slope-intercept form of the line that passes through the given points: (-1/2,-1), (3,5/2). Also, write an equation in point-slope form of the line that passes through the given points: (6,-3), (-1,9). thanks!

191. ## science

How are trees adapted to survive in an alpine ecosystem?

192. ## ELA

How do you punctuate the sentence below, Did Mr. Benson say your reports are due next week?

193. ## Algebra 2 URGENT

Simplify: (1)/u^2-(2u)/(1)/(u^2-4)

194. ## guess and check

there are 42 question on lindas test. sum of the questions are 2 point and sum were 3 points. she got a perfect score

195. ## Science

Changes in the environment are monitored by (blank)satellites.

196. ## Algebra 2 URGENT

Solve each open sentence. x-5/9

197. ## science

pictographs and theme maps are similar, which is more effective and for what reasons

198. ## english

what is the meaning of the subject of the sentence?

199. ## algebra

2x-3xy ________ 2x y

200. ## math

A cylindrical can of cleaner holds 1 L of liquid. What is its height if the diameter of the base is 10 cm?

201. ## math

A cylindrical can of cleaner holds 1 L of liquid. What is its height if the diameter of the base is 12 cm? Round your answer to the nearest tenth of a cm.

202. ## chemistry

5.0 g of NaNO3 is dissolved in 50.0 g of water. The initial temperature of the water was 21 degrees Celsius and the final temperature of the water is 15.7 degrees Celsius. 1)Calculate the heat of solution, DeltaHsolution. 2) calculate the heat of solution,

203. ## calc

how does 2cos^2 x - 2sin^2 x = 2cos2x

204. ## Math

what is the simplest form of 6/15, 15/60,and 78???????

205. ## Physics

i was woundering if you could point in the right direction i'm looking for very easy physics topics that makes use of the law of sines or the law of cosines Thanks

206. ## Science

What would be the origin of endosporeforming bacteria in pepper and other dried foods such as oregano? and.. How would a high number of endosporeforming bacteria in pepper affect the quality and other prepared and vacuum-packaged ready-to-eat foods? I know

207. ## Grammar

Are these correctly punctuated? Infection, for example, can be a complication of surgery. He arrived at the hospital with a heavily, bleeding gunshot wound. The new heart clinic is located at 555 NW First Street, Seattle, Washington, 98104. Additionally,

208. ## science

which chemical agent is frequently used as a rust preventive coating on steel and also used as an alloy trestment

209. ## math

buying a house supposed you are in the market for a new home and are intersted in a new housong community under construction in different city. the sales representative informs you that there are two floor plans available, and that there are a total of 56

210. ## Algebra 2 URGENT

Simplify: x+2/x^2+x-2/2x

211. ## Linear equations algebra

a) The sales representative here tells you they also have two floor plans available, but they only have 38 homes available. Write an equation that illustrates the situation. Use x and y to denote floor plan #1 and floor plan #2 respectively. X + Y = 38 b)

212. ## Math

Name the property of addition that has been applied. 5 + 8 = 8 + 5

213. ## math

How do i change these into y=? 3x – 2y = –1 --> -2y= -1-3x 5x + 2y = 25 --> 2y= 25-5x

214. ## Chemistry

5.0 g of NaNO3 is dissolved in 50.0 g of water. The initial temperature of the water was 21 degrees Celsius and the final temperature of the water is 15.7 degrees Celsius. 1)Calculate the heat of solution, DeltaHsolution. 2) calculate the heat of solution,

215. ## 4th

What is the definition for the word multiplied?

216. ## world history

one more question.... Did the directory replace the National Convention

217. ## Spanish 3

Would someone be willing to proofread my essay? It's supposed to be from the point of view of Pablo Picasso. Yo nací el 25 de octubre, 1881, en Malaga, Andalucia. Mi padre fue un pintor y un profesor de arte. Me enseñó los fundamentos de arte. Cuando

218. ## math

Solve the equation. |n – 6| = |1 – n|

219. ## Algebra 2 URGENT

Simplify: (x)/(x-1)-(1)/(x+1)

220. ## eth125

How accurately do you think self assessment exercises evaluate self-concept and self-esteem?

Lori wants to go to the beach on saturday but she's not sure if she has enough gas in her car to drive there and back home. The beach is 77 miles from Lori's house but the car gets about 28 miles per gallon. How many gallons of gas does Lori need to have

222. ## Science

what is the definition of dissolve?

223. ## math

2x+y=6 find what y equals

224. ## social studies

Who are the Framers?

225. ## Language Studies 3rd Grade

Is "I" a common noun or proper noun?

plot elements: cause of conflict

227. ## science

find the force exerted by z rope on a 10kg mass that is hanging from the rope

7y+2

229. ## math

I need to make up ten numbers that are divisible by 2,3,4,5,6,8,and 10.

230. ## Algebra 2 URGENT

Simplify: x+2/x^2+x-2/2x Please Show All Work!

231. ## math

what is -8-7(y+2) equal to

What is a PRIME NUMBER?

233. ## geometry

describe the characteristics that a pyramid must have for it to have an axis of rotational symmetry

234. ## art

what objects can i use to create an alphabet? it can be any object or material

235. ## American National Government

Can someone please help me with this question? I have looked and I am just not finding anything. How have federal court rulings in the civil liberties area affected public policy? I am writing a paper about the freedom of religion. Thanks.

236. ## u.s. history

What were the souths stragies to win the civil war?

237. ## Art

How do you make a flip-book? I need a step-by-step proccess how to make one, please help!

238. ## health

What are the implications for patients

239. ## chem 101

how many unit cells in fcc gold?

240. ## Graphic Design

Find three examples of this typeface in use today.... I'm lost with this question and I can't find anything. Can you help me?

241. ## Physics

A rail way 50m long, with initial temperature of 20degree celsius subjected to a great heat. How much will it expand when its temperature is tripled?

242. ## Grammar and Composition

check these: list one example of each figurative language device. simile: The robber was as quiet as a mouse. metaphor: The teacher had a heart of stone ? personification: While gazing up at the night sky I saw a smiling moon looking down at me.

243. ## physical

Write one additional audit question for each of the categories (board, staff, donors and fund raisers, clients/customers, volunteers, and society

244. ## writeacher-RE

thankyou people who agree that christinity is sexist such as feminists claim that... Women should have the same rights as men

245. ## eng

words with the letters d, l, b, a , e, e, n, b plz been stuck for a while grade 2

246. ## Algebra

3.8y-4.7=3.8y+17.5

247. ## to Raymond re UC personal essay

http://www.jiskha.com/display.cgi?id=1255922909

248. ## social studies

after the 3/5 compromise could slaves vote?

-10+12

250. ## spelling

my 2nd grader has a spelling word "cultures" and need to put into a sentence..