# Questions Asked onNovember 16, 2010

1. ## Chemistry

Write skeleton equations for these reactions. a. hydrogen iodide(g) --> hydrogen(g) + iodine(g) b. aluminum(s)+iodine(s)--> aluminum iodide(s) c. iron(II) oxide(s) + oxygen(g) --> iron(III) oxide(s)

2. ## chemistry

Earth's population is about 6.5 billion. Suppose that every person on Earth participates in a process of counting identical particles at the rate of two particles per second. How many years would it take to count 6.0 x 10^23 particles? Assume that there

3. ## Chemistry

Magnesium has three naturally occurring isotopes: 24 Mg (23.985 amu) with 78.99% abundance, 25 Mg (24.986 amu) with 10.00% abundance, and a third with 11.01% abundance. Look up the atomic mass of magnesium, and then calculate the mass of the third isotope.

4. ## Physics

A brass plug is to be placed in a ring made of iron. At 20 degrees Celsius, the diameter of the plug is 8.737 cm and that of the inside of the ring is 8.723 cm. They must both be brought to what common temperature in order to fit? (ANSWER: -210 degrees

5. ## Calc

A 100 inch piece of wire is divided into 2 pieces and each piece is bent into a square. How should this be done in order of minimize the sum of the areas of the 2 squares? a) express the sum of the areas of the squares in terms of the lengths of x and y of

6. ## algebra

what did the baby porcupine say when it backed into a cactus?

7. ## help me physics

The femur is a bone in the leg whose minium cross-sectional area is about 3.60 E-4 m2. A compressional force in excess of 6.90 E4 N will fracture this bone. (a) Find the maximum stress that this bone can withstand. 1 N/m2 (b) What is the strain that exists

8. ## english

In the story Call of the Wild.Why did "Black" Burton punch John Thorton?

asked by paul white
9. ## physics

An antelope is at a distance of 20.0 m from a converging lens of focal length 32.0 cm. The lens forms an image of the animal. If the antelope runs towards the lens at a speed of 5.50 m/s, what is the speed with which the image moves? 1/q= 1/32cm-1/2000cm

10. ## Math

Using Netwon Law of Cool, the graph of T(t)=S+(T subscript --S)e^kt approaches a horizontal asymptote.What does the asymtote describe? a) intial temperature of the heated object b) temperature of the surrounding environment c) the difference in the

11. ## physics

A novice skier, starting from rest, slides down a frictionless 33.0° incline whose vertical height is 127 m. How fast is she going when she reaches the bottom?

12. ## physics

In the latest Indian Jones film, Indy is supposed to throw a grenade from his car, which is going 79.0 km/h, to his enemy's car, which is going 102 km/h. The enemy's car is 14.3 m in front of the Indy's when he lets go of the grenade. If Indy throws the

13. ## physics

A rope attaches a tire to an overhanging tree limb. A girl swinging on the tire has a centripetal acceleration of 3.0 m/s^2. If the length of the rope is 2.1 m, what is the girl's tangential speed?

14. ## biology

compare and contrast karyotype studies and pedigrees using a venn diagram

15. ## Physics

A uniform beam of length 1.0 m and mass 16 kg is attached to a wall by a cable that makes an angle of 30 degrees with the end of the beam, as shown in the figure. The beam is free to pivot at the point where it attaches to the wall. What is the tension in

16. ## 11th grade

A 40-kg skater is standing still in front of a wall. By pushing against the wall she propels herself backward with a velocity of -1.8 m/s. Her hands are in contact with the wall for 0.80 s. Ignore friction and wind resistance. Find the magnitude and

17. ## Physics

A cyclist intends to cycle up a 7.5 degree hill whose vertical height is 170 m. Assuming the mass of bicycle plus cyclist is 95 kg, calculate how much work must be done against gravity. If each complete revolution of the pedals moves the bike 5.6 m along

18. ## Statistics

Suppose x is a uniform random variable with c=10 and d=90. Find the probability that a randomly selected observation exceeds26.

19. ## physics

What is the total force on the bottom of a swimming pool 22.0 m by 8.9 m whose uniform depth is 1.6 m? What is the absolute pressure on the bottom of a swimming pool? What will be the pressure against the side of the pool near the bottom?

20. ## Memorial university,chemistry

What is the total number of sigma and pi bonds in the molecule {CH}_3{NCO}?

21. ## physics

As a young boy swings a yo-yo parallel to the ground and above his head, the yo-yo has a centripetal acceleration of 250m/s^2. If the yo-yo's string is 0.50 m long, what is the yo-yo's tangential speed?

22. ## chemistry

can someone please help me with this question: mass of ferrous ammonium sulfate = 4g mass of k3(fe(c204)3)*3h2o = 4.25 g 1) using the above mass of ferrous ammonium sulfate calculate the theoretical yield of k3(fe(c204)3)*3h2o? 2) the percent yeild of it?

23. ## Physics

Near the equator, the Earth's magnetic field point almost horizontally to the north and has a magnitude of B = 50 micro T. What should be the magnitude and direction for the velocity of an electron if its weight is to be exactly balanced by the magnetic

24. ## Trig

Simplify: (cosx + cos2x + cos3x + cos4x + cos5x + cos6x) / (sinx + sin2x + sin3x + sin4x + sin5x + sin6x) into a single Cotangent function. Using the sum-to-products, I was able to get remove some of the addition in attempts to get full multiplication, but

25. ## Physics

The angular speed of a propeller on a boat increases with constant acceleration from 11 rad/s to 26 rad/s in 2.4 seconds. Through what angle did the propeller turn during this time?

26. ## physics

A rocket is launched at an angle of 56.0° above the horizontal with an initial speed of 101 m/s. The rocket moves for 3.00 s along its initial line of motion with an acceleration of 29.0 m/s2. At this time, its engines fail and the rocket proceeds to move

27. ## Chemistry

Write skeleton equations for these reactions. a. butane(l) + oxygen (g) --> carbon dioxide(g) + water(l). b. aluminum carbonate(s)--> aluminum oxide(s) + carbon dioxide(g) c. silver nitrate(aq) + sodium sulfide(aq) --> silver sulfide(s) + sodium

28. ## Chemistry

Write skeleton equations for these reactions. a. butane(l) + oxygen (g) --> carbon dioxide(g) + water(l). b. aluminum carbonate(s)--> aluminum oxide(s) + carbon dioxide(g) c. silver nitrate(aq) + sodium sulfide(aq) --> silver sulfide(s) + sodium

29. ## Physics

Starting from rest, a 98-kg firefighter slides down a fire pole. The average frictional force everted on him by the pole has a magnitude of 720 N, and his speed at the bottom of the pole is 3.8 m/s. How far did he slide down the pole?

30. ## physics help me

A spring is hung from the ceiling. A 0.300 kg block is then attached to the free end of the spring. When released from rest, the block drops 0.170 m before momentarily coming to rest. (a) What is the spring constant of the spring? (b) Find the angular

31. ## Physics

A 2.60-kg block is attached to a horizontal spring that has a spring constant of 160. N/m. At the instant when the displacement of the spring from its unstrained length is -0.115 m, what is the acceleration a of the object?

102. ## statistics

The average time to sew a pair of pants is 4.2 hours with a standard deviation of 30 minutes and if the distribution is normal then the probability of a worker finishing the pants in less than 3 hours is.

103. ## organic chemistry

What is the product of reaction of triphenylmethanol heated up with 40% HI in glacial acetic acid and then treated with sodium bisulfite?

104. ## math

a basketball player made 24 out of 75 free throws. what percent is this?

105. ## Chemistry

Hi there, I am doing some data calculations for my lab, but I'm having some trouble. Given: Mass of ferrous ammonium sulfate=4.0g Mass of K3[Fe(C204)3] 3H20 =4.53g 1. Using the above mass of ferrous ammonium sulfate, calculate the theoretical yield of the

134. ## english

Poetry that is not artistic in form or meaning is didactic.

135. ## Economics

Using examples explain how the Production Possibilities Frontier illustrates the main economic concepts. You should include a detailed explanation of these economic concepts.

136. ## statistics

The population mean and standard deviation are given. Find the required probability and determine whether the given sample mean would be considered unusual. For a sample of n=36, find the probability of a sample mean being less than 12.2 if M=12 and O=0.95

137. ## heatlh care

You're The New Director Of A Hospital Health Information Management Department. The Chief Financial Officer Has Hired You For Your Expertise In Health Care Reimbursement And Needs To Know How Your Department can help with reimbursement.list the most

220. ## chemistry

Use the thermochemical equations: 1/2 H2(g)+1/2 I2(g) ...............> HI(g) delta H = -1.1 k cal 1/2 H2(g).......> H2 (g) delta H = -104.2 k cal 1/2 I2 (g)..............> I (g) delta H = +18.1 k cal To present for the formation of hydrogen iodide gas from

221. ## English

We just got done reading Animal Farm, by George Orwell. I cant come up with enough facts for the following questions. How does Napoloen and the other pigs control the animals through fear and intimidation? so far i have by 1)by killing other animals right

222. ## calculus

With waht speed must a baseball be thrown upward from the ground in order to reach the top of the Washington Monment? (The top of the monument is 55o ft)

223. ## Math

This irregular shape has 2m,2m,2m, 3m, 4m, 7m _2m_ _2m_ | |2m__3m_| | | | |________| 4 m 7 m how would I find the area if you can't tell how it is so you can't answer it I understand

224. ## Chemistry

I'm having a hard time with a question predicting the reaction (if any) of 1,2-dichloroethane and sodium iodide, sodium iodate, and sulfuric acid. Any suggestions? Thanks!

225. ## cmo155

Students are often confused about the use of the words good and well in their writing. Write a 100-word passage to Susan Anker, the author of the course’s textbook, in which you describe five details from her book that are good and five details about the

226. ## grade 10 social studies

why was italy the forst to use indo arabic numerals?

227. ## crt/205

Letter to the editor: “I would like to express my feelings on the recent conflict between county supervisor Blanche Wilder and Murdock County Sheriff Al Peters over the county budget“I have listened to sheriffs’ radio broadcasts. Many times there

228. ## math

On the last school day of the first grading period Michael learns his final grade for each class. If order is not important and we know he has earned at least 1 of each of the 5 letter grades, what is the total number of combinations of 7 final grades (one

229. ## English

Define Socialism. George Orwell doesnt think Socialism can work. WHY? How does he prove that it doesnt work by the way Animal farm ends?

230. ## Physics

Question contains pictures: h t t p : / / g o o . g l / M H k y 1 (delete the spaces between the characters for the URL)

231. ## elc

Select the item that does not belong. a) Amino acid b) Carbon c) Heredity d) Nucleic acid e) Controls the cell activities

232. ## English

I forgot to include a few other sentences on the comparatives of adverbs. 1) He lives the farthest from the school. He has the least money among us. He is the friendliest among my classmates. He has made the fewest mistakes. 2) He wears the most expensive

233. ## Chemistry

I'm having a hard time with a question predicting the reaction (if any) of 1,2-dichloroethane and sodium iodide, sodium iodate, and sulfuric acid. Any suggestions? Thanks!

234. ## business information systems

list the alternative methods and tools for system development. How do they differ from SDLC?

235. ## math

a quadrilateral with angles that mesure: 10x-25, 10x, 3x to the second power, and 2x to the second power. solve for x.

236. ## Government

a report on two different ways that you, as a young citizen, can become active in politics that would help promote causes that you believe in.

237. ## 11th grade

Three different weights are suspended from three different springs. Each spring has an elasticity coefficient of 18.5. The equation for the vertical displacement is y= 1.5cosine(t times the square root of k/m), where t is time, k is the elasticity

238. ## math

A square with an top as 100cm and a side with 1 m A= b x h A= 100 x1 A= 100 cm2 or m2?

239. ## Calculus

First make a substitution and then use integration by parts to evaluate. The integral of (x^9)(cos(x^5))dx What do you substitute first? I do not understand what they are asking for. Please help. thanks!

240. ## Commercial Law

What is the difference between an offer and an invitation to treat and why is the difference important;

241. ## Englsih

1.who told us about computers 2.since the club meets in the afternoon 3.through the puddles. 4.before we ate dinner 5.toward us Use each phrase and clause in sentence then underline word that phrase/clause modifies. 1.The man who told us about computers

242. ## Statistics

Assume a population of any 4 numbers(suppose: 4,8,15,19). Select a random sample of size 2 with replacement from the population. List all the possible samples and their corresponding values of x̄ “x-bar” and then find the probability distribution of

243. ## ENGLISH

WHAT IS CENSORSHIP AND RESEARCH PAPER

244. ## english

okay i have 2 out of 3 supporting ideas for my essay but i need 3 so i need 1 more here is mine "does being shy effects my education" please help and thank you

245. ## 5th math

560.1/3 0.1s,1s, 10s ,100s. How I estimated? Answer___________. please! help me i'm total lost with this.. thanks!I knew it's division.

246. ## math 7th

need help in "using similar figures"

247. ## french

Can you please check these thanks. Part 1: Complétez 1-2. On peut acheter des tickets de métro au --------- ou au -----------. Answer 1: guichet Answer 2: un distributeur automatique 3. Il faut -------- son ticket dans le tourniquet. Answer: valider 4.

248. ## Physics

Imagine you've finished this academic year and gone home to enjoy your summer vacation. During one of your days of relaxation and non-academic bliss, however, you realize you need to run a few errands. After stopping at the gas station where you fill the

asked by Need Help
249. ## Physics

Two blocks of the same mass are raised up a height of 3m from the ground. One is raised straight up and placed on a pedestal and the other is pushed up an incline with friction to get there. In which case, if either is work more necessary? Which block

250. ## science

do you where i can find a answer sheet to chapter 9 weathering and erosion? because i really want to ace the next test and i don't know the right answers to it thnx

251. ## math

a quadrilateral with angles that mesure: 10x-25, 10x, 3x to the second power, and 2x to the second power. solve for x.

252. ## Social studies

The region covering the area from the appalachians to the rockies and from the gulf of mexico to the great lakes in the 1600's was called ?

253. ## 4th grade algebra

7 - 7 - 7 - 7 = ? 12 - 15 - 10 - 8 = ? 3 - 7 - 4 - 2 = ? 11 - 9 - 6 - 6 = ? 6 - 5 - 4 - 2 = ? 8 - 5 - 5 - 5 = ? 12 - 7 - 5 - 4 = ? 13 - 3 - 6 - 1 = ? 16 - 10 - 2 - 3 = ? 8 - 2 - 2 - 2 = ? I am not understanding how to help figure these problems out? I

254. ## finance

What is the relationship between an interest rate and a discount rate in time value of money calculations?

255. ## social studies

write a pamplet against the government of charles 1 that you imagine walter prynne might have written

256. ## language

replacing with possessove nouns ex the sister Miguel woke up him. Miguel's sister woke up him

257. ## soc101

Of the different forms of social structure described by Durkheim, Tonnies, and Lenski, which comes closest to matching your social setting? Use the following terms in your explanation: status, role, primary group, and secondary group.

258. ## Physics

A cylinder with a piston is filled with ideal gas. The gas temperature is held at 450 K. The cylinder is heated by an oven through a square metal rod connected between the oven and the cylinder. The rod has sides d = 2 cm and length L = 2.3 m. (a) If the

259. ## Physics

Intravenous infusions are often made under gravity. At what height should the bottle be placed so the liquid pressure is 700 mm-H2O?

260. ## Business Organization

What is the difference between a manager and a leader;

261. ## Business Organization

What are the main or different types of a leader or leadership; Discuss their main functions and state whether anyone can become a leader.

262. ## math

How would I setup the equation for the perimeter and area of a similar (6inch width, and 8 inch length)rectangle that is increased by a ratio of 1:n?

263. ## English

1. Ask a question at a time. (What are other expressions which are similar to 'at a time'?) 2. John is in his room at the moment. (What other expressions are similar to 'at the moment'?)

264. ## college;math

what is 7x+7y=21 in its slope intercept form?

265. ## college algebra

if i throw a ball up into the air it will not end up being 800 meters, in the air if it leaves my hand at 5 meters

266. ## World History

what were the reasons rome fell? four facts about each :]

267. ## Chemistry

A 0.23 M solution of a weak acid has a pH of 2.89. What is the Ka(acid ionization constant)for this acid?

268. ## 8th grade

(18 - (-4))divide (-11) (-4) + 2

269. ## English

1.Camels stamped and bellowed in annoyance when packs were put on them. 2.Aloe plants, which originated in Africa, are now widely available in the US. 3.As far as scientists can tell, there is no connection between these two events. 4.If you adjust the

270. ## ethics

How much of a part does ethics play in the development of organizational culture? Is it a big, important part? Why or why not?

271. ## Circuts

A wye-connected load consists of three impedances of 12+j3 ohms each. The line voltage driving the load is 208V. What is the phase voltage? What is the phase current? What is the apparent power delivered to the load? What is the power factor? What is the

272. ## Calculus

Evaluate the integral: the integral of [5e^(2t)]/[1+4e^(2t)]dt. I used u sub and let u=e^2t and got 5/2arctan(e^2t)+C. But this answer is incorrect. Please help. Thanks

273. ## chem

let's say that an average egg has a mass of 48 g. What mass would a mole of eggs have?

274. ## ENGLISH

I need to know if MY SENTENCES focus on one key point, The topic sentence relates to the paragraph as a whole, The content is comprehensive, accurate, and effective, Major points are stated clearly; are supported by specific details, examples, or analysis;

275. ## Math

What is 13y-2x-12-15y

276. ## help

I'm trying to find old newspaper articles from the 1940's about the mergence of day care and nurseries but I cannot find any. Help please!v

277. ## geometry

what is 8x+4y=16 in slop intercept form?

278. ## math

the sum of 3 consecutive integers is the same value as twice the greatest of the integers. Find the 3 integers.

The company offers two types of sales: 1. Internet sales; 2. Store sales. The marketing research manager believes that the Internet sales are more than 10% higher than store sales. The null hypothesis would be: A. Pinternet–Pstore >.10 B.

280. ## 9th grad algebra

how do you solve y=5x-8 and 5y=2x+6 using elmination? Thank you, Raina

281. ## adult education

Did i correct all the mistakes in this article? Why are many students choosing to pursue their college degrees using their home computers? Benjamin Franklin said “A penny saved is a penny earned.” This principle applies to the American and foreign

282. ## Journalism

How did the Indian education movement affect young Native Americans?

283. ## 7th grade Math

Find the next three numbers in this sequence and explain the reasoning; 2/3, 2/5, 6/25, 18/125,...

284. ## chemistry

if you mixed 7 grams of iodine pentafloride with 2 grams of water which substance would be the limiting reactant?

285. ## algebra 1

8x-(2x+7)=23I am completely drawing a blank as to how I am suppose to solve this. Can someone offer the first step?

286. ## 4th grade

I am a number between 75 and 150, my tens is three times my ones, my sum is 5 and my hundreds and ones are the same.

287. ## Abraham Lincoln's adult hood

I need information on Abraham Lincoln's adult hood. Can anyone give me a site that is not the wiki please? Thanks

288. ## 11th grade

Solve for x:9x^2-49=0

289. ## english

Odipus Rex/Odipus the king Identify an important question about the text that the film had to address. Evaluate the question. Setting,costume, eliminating a speech or character, music..

The company offers two types of sales: 1. Internet sales; 2. Store sales. The marketing research manager believes that the Internet sales are more than 10% higher than store sales. The null hypothesis would be: A. Pinternet–Pstore >.10 B.

291. ## English Literature

"But it was for I would have lived to have loved God better and longer time, that I might by the grace of that living have the more knowing and loving of God in the bless of heaven." Can you tell me what this quote from Julian of Norwich, "The book of

292. ## 12th grade

If you consider The Call of the Wild to be an allegory, which one of the following statements would be true?

293. ## Commercial Law

What are the main requirements for a valid contract;

294. ## English

(Question) Chickens include chicks, hens, and roosters. Then, what includs, cows, bulls, and calves?

295. ## geometry

What does it mean by a line being unique?

296. ## english

how do you misuse pronouns, verbs, adjectives, adverbs, prepositions and conjunctions. Im trying to help my little brother but im lost.

297. ## American History

I have to create a story about a patriot; what are some characteristics of one? Names, jobs, etc.

298. ## Math

How would you estimate using fractions to find the percentage of a number. For example: 28% of 48.

299. ## mat116

Graph the system of inequalities: x+3y or= 0

300. ## C++ Programming

Where would I find a great video resource for learning Visual C++ for beginners? I'm a newbie and I'm looking in some code for a project on sourceforge that i'm interested in. however, I don't know C++ so i don't know how to contribute to this program.

345. ## algebra

how do you graph a fraction?

346. ## science

what is the removal of small loose particles of rock by the wind hint 9 letters

347. ## weathering and erosion

what is the wearing away and removal of rock material hint 7 letters

348. ## english

is shy is another word for lack of self-confidence are they the same or different cause i think im getting mix up here please help and thank you

349. ## Qestion bout WH

how can i get a better gradfe wen i cant remember all the stuff only bits and pieces

350. ## chem 101

how can a calorimeter constant be determined experimentally?

351. ## Calculus

The limit from x--> infinity of x^(3/x) i keep getting 3/infinity, which is infinity and this answer is incorrect.

352. ## vocabulary

homophone sentence

353. ## math

-3/4 + 11/15 X 3/22 not sure if I use order of operations on this kind of problem???

354. ## material science

how can we achive nano size in tio2 powders

355. ## math

48 divided by 3796

356. ## history

were did king george III hire mecenaries from in order to fight the colonists

357. ## Quick Question

If the sleeve of your clothing catches on fire. Should you stop, drop and roll? Thanks.

358. ## algebra

how to find scale factor of fractions also with fractions in them

asked by north oaks middle
359. ## physical

give brief explanation of the origin of both football and soccer

360. ## 4th grade

why is 7 times 8 not a number sentance

361. ## confidentiality of health information

comp;are and contrast contributory negligence with comparative negligence

362. ## College Algebra

Write each of the following as a single logarithm (log (x+3))/(3) = 1

363. ## math

A= 100 cm x 1 m A= 100 cm x 100 cm A=10000 cm2?

364. ## world history

describe the role of education in athens and sparta

365. ## English

Can you please check if my sentences are possible? Thank you 1)When she was born,the doctors noticed that she had a problem with her feet. 2)She was operated on her feet (?)/(She underwent an operation) and the doctors amputated her feet and part of her

366. ## 9th grade algebra

solve.(polynomials) 3(x-5)=45

367. ## MATH HELP ME 1st

5+0=5 tell which property i think it is assosciotive

368. ## language arts

is the a verb adjective or adverb for the word politics

369. ## math

find the missing number and landmarks for the set of numbers below

370. ## math

A= 0.5 m x 20 cm

371. ## algebra 2

Find the rule for the quadratic. The h =24ft. The pumpkin retuerns to the ground after 6 seconds. Hint: wat is the height when it hits the ground? Use h +vt-16t^2

372. ## Math

If the length of a square garden is five and seven eighths long, then what is the perimeter?

373. ## English

1.The castanets, which were quite old, had been Melanie's grandmother's. 2.You were always singing when you were little. 3.Three Indian elephants patiently towed the logs that had just been cut. 4.Stay with us as long as you want. 5.The Forbidden City,

374. ## math

-5/6 + 1 2/3 divided by -8/9 help!

375. ## 7th grade health

how much energy you use when you workout?

376. ## us history

what did the europeans and the africans traded

377. ## algebra

2x + 4 = 9 - y

378. ## weathering and erosion

gravity causing rock or sediment to move downhill hint 12 letters

379. ## 7grade math

using ratio 1:2 find the perimeter of rectangle that has a width of 6 inches and a length of 8 inches? need answer asap

380. ## math

what is the x and y intercept of 4x+7y=8?

381. ## Math

A= 10,560 ft x 2 mi

382. ## MATH HELP ME 1st

what property would 4*1=4 be

383. ## math

_______7m______ |\ / | | \ 2.8m 2.8m / | | \ / | | n \ / | | / \ n | | / \ | | / \ | / 2.8m 2.8m \ | ____________ \ | Find the area of each shaded region( n not shaded). Assume that all angles that appear to be right angles are right angles.

384. ## math

waht is the percent and decimal of 9 out of 50

385. ## math

8q+6-2p=0 39=p-q what is the solution or ordered pair

386. ## weathering and erosion

what is the flow of water over earths surface hint 6 letters