Questions Asked on
October 18, 2006

  1. chemistry

    Asprin, C9H8O4, is prepared by reacting salicylic acid, C7H6O3, with acetic anhydride, C4H6O3, in the reaction C7H6O3(s) + C4H6O3(l) -> C9H8O4(s) + C2H4O2(l) A student is told to prepare 45.0 g of aspirin. She is also told to use a 55.0% excess of the

    asked by Chris
  2. Trigonometry

    What is cos (pi/2 - x) secx using the fundamental identities to simplify the expression. I think I have the right answer but I want to check to make sure. Well, cos (pi/2 - x) is something you should've seen already. It's just another name for sin(x).

    asked by Rob
  3. Help!!!

    Why did the colonists find the writing of the Declaration of Independence so important for the creation of the United States? This site will give you some insight. But think of the declaration in these

    asked by Mike
  4. math

    what is the rule for greater than less than sign. The greater than sign, > , means that whatever is to the left of it is greater than what is to the right of the sign. The less than sign, < , is just the opposite. Whatever is to the left of the sign is

    asked by Jenny
  5. Chemistry

    what is the molecular formula of a compound that is 54.5% C, 9.09% H, and 36.4% O. with a molecular weight of 176g/mol. A)C8H16O4 B)C4H8O2 C)C7H12O5 D)C9H18O3 Assume you have 100 g of the substance, then you have 54.5g of C, etc. Moles C= 54.5/12=4.54 mol

    asked by Justyna
  6. Science - Melting Ice

    In the process of heating ice into the boiling state of its liquid form, did the procass absorb or release energy? Did the molecules spontaneously move fast? Where did the energy come from and where did it go? did it increase or decrease? was it lost? Were

    asked by Sigor

    which is correct? Dallas-based (or)Dallas-based-company The case against the Dallas based companywas setteled in Seattle. You don't need a hyphen between based and company.

    asked by Kourtney
  8. science

    a train is going 95mph you walk 5mph toward front of train. in relation to passanger seated on train how fast are you moving? The seated passenger is fixed in the same frame of reference as the train. Therefore the walking passenger has a relative velocity

    asked by pat
  9. math...

    how can I tell if a sequences is airthmetic, geometric or neither? determine the first three terms of each and determine if each are airthmetic, geometric or neither. 1) tn=5t n-1+ 3 wheret 1=2 first three terms: 3,13,23 airthmetic 2)t(n)= -3(4)^n first

    asked by GEORGE!
  10. Economics help

    What is the short-run effect on the exchange rate of an increase in domestic real GNP, given expectations about future exchange rates? Imagine that the central bank of an economy with unemployment doubles its money supply. In the long run, full employment

    asked by Kacey
  11. chemistry

    Write the net ionic equation for any precipitation reaction that occurs when .1M solutions of the following are mixed. Does the molarity affect the equation at all, or is it just a normal net ionic equation? If the solutions are too dilute A might not ppt

    asked by Chris
  12. Physical-Chemistry

    Protein denaturations are usually irreversible but may be reversible under a narrow range of conditions. At pH 2.0, at temperatures ranging from about 40o C to 50o C, there is an equilibrium between the active form P and the deactivated form D of the

    asked by Paul
  13. derivative of y

    how to find derivative of y: y = sin inverse(square root of 2t) I got this. Please ignore.

    asked by Jen
  14. english

    What needs to be done to correct this sentence? Just what would you do,David,if the situation were reversed? a. THE SENTENCE IS CORRECTLY PUNCUATED b. REMOVE THE COMMA BEFORE DAVID c. REMOVE THE COMMA AFTER DAVID d. REPLACE THE COMMA WITH A SEMICOLON The

    asked by Kourtney
  15. Poetry meaning question..

    Hiya, I need some help for a poetry essay I have to write. Can you tell me what the line "darkness beneath nights darkness had freed, that rose slowly towards me, watching" might mean? I have no idea. What is the context of this? What is the title of the

    asked by Sarah
  16. Help!!!

    Discuss the@reasoning behind the 9th Amendment to the US Constitution. Please answer it. This has an understandable explanation of the purpose. The annotations at this site

    asked by Mike
  17. literacy

    can u plz give me 10 connectives and 10 sentences with them e.g:ALTHOUGH i love ice cream.i'm only allowed it once a week will u be done by tommorow? AND PLZ MAKE IT SNAPPY!!!!!!

    asked by anesa
  18. math-help!

    A croquet ball weighs 460 grams. Together a golf ball and a croquet ball weigh the same as ll golf balls. What does the golf bal weigh? I would be able to figure out the answer, but they're asking me to write the eqaution, and I always do it wrong! Let C

    asked by pinkpolkadots
  19. math- help again please

    An employee earns $7.00 and hour for the first 35 hours worked in a week, and $10.50 for any hours over 35. One paycheck (before deductions) was for $308.00.How many hours did the employee work? Let t denote the overtime hours. Then you know that if the

    asked by pinkpolkadots
  20. Poetry Essay

    Here's my essay, could you please tell me what you think of it and suggest some improvements? Poetry Essay Chinua Achebe and Ted Hughes, the poets of Vultures and Pike, have both written two poems which show ambivalence towards their poem’s subjects, but

    asked by Sarah
  21. math!

    george entered a function into his calculator andfound the following partail sums s1=0.0016 s2= 0.0096 s3= 0.0496 s4= 0.2496 s5= 1.2496 determine the genral term of the corresponding sequence how would I approach this question? If this is a series then sn

    asked by kassandra
  22. question

    Which is correct? Dallas-based-company or Dallas-based company the second one =)

    asked by Kourtney
  23. Re: Poetry Essay

    Hey writeacher, you asked me to repost my corrections. I have corrected from where you left off and I THINK I have most of the punctuation mistakes but I don't have a knack for spotting wording mistakes although I have tried. You know when you say change

    asked by Sarah
  24. Fractions.. :S

    How would I work out this question...? A car costs 1,150 after it was reduced by 15%. What was the original cost? :S If x is the original cost, then .85*x = 1,150 or x = 1,150/.85 So I would divide by 85 and times by 15 and then add my answer to 1,150? No,

    asked by Sarah
  25. AP CHem

    What is the mole fraction of CO2 if one liter of a mixture contains 2.50mol O2,5.00 mol N2, and 1.50 mol CO2? A).214 B).167 C)5.67 molefractionCO2= molesCO2/totalmoles

    asked by Jen
  26. ethnic class

    I need help in answering these questions. Please help me answer and get a good understanding as of why so i can keep reviewing for my final exam. The exam won't be till 3months from now but i truelly want to understand the concept of these answers of what

    asked by Jasmine07202006
  27. Science plz help

    Explain a process in the human body in which there is evidence of the cell cycle at work. Does Hair grow ? Do fingernails grow? The monthly cycle is also an example of cell growth. What about your increasing weight (getting tall, getting heavier)?

    asked by Cassie
  28. animals

    do you know " how to choose the perfect puppy"? english assignment and have to write 5 paragraphs on a topic of my choice. chose the above topic. know need help!!!!! project due on oct 24 2067(no! 2006 LOL!) Well, you can write on how big the puppy is

    asked by school girl11
  29. nullification

    i posted yesturday and the website i was directed to was for the 1800s. i need to know how nullification was still going on in the 1900s, but it can't be jury nullification Did you investigate the states rights' issues during the Civil Rights Movement of

    asked by INEEDHELP!!!
  30. Grammar/english

    Can someone check these for me please and if I am wrong please tell me where and why or what should i put to make it right. The following grammar sentences need to follow the rule of "Dangling Modifiers",if they need no change write no change. 1.Flying

    asked by Jasmine07202006
  31. grammar/english

    Can someone check these for me please and if I am wrong please tell me where and why or what should i put to make it right. The following grammar sentences need to follow the rule of "Predication ",if they need no change write no change. 1.Our resolution

    asked by Jasmine07202006
  32. Geology

    I need to find some kind of song written after 1990 about geology. It have to do with any part of geology but it just had to be written after 1990. any suggestions about where i might be able to find something like this? -thanks-

    asked by A
  33. science

    An object 5 millimeters high is located 15 millimeters in front of a plane mirror. How far from the mirror is the image located? using the lens equation.. 1/f= 1/o + 1/i here, o is fifteen cm, focal length for a plane mirror is infintity, so 0=1/15 + 1/i

    asked by baraka
  34. someone explain to me!

    the third term of a geometric sequence is t3= -75 and the sixth term is t6=9375. determine the first term and the common ratio. how do I do this question I am tying really hard but I still don't comprehend this question! We have t3 = -75 and t6 = 9375. A

    asked by Andrew
  35. Chemistry

    According to the following equation if 3 mol of Fe2(CO3)3 are mixed with 20 mol of H+1: Fe2(CO3)3 +6H+1 ==>2Fe+3 + 3CO2 +3H2O A. all the Fe2(CO3)3 will react. B. all of the H+1 will react. C. 3.3 mol ofFe2(CO3)3 will react. D. 1.6 mol of H+1 will remain

    asked by Anonymous
  36. Chem

    The correction terms in the Van der Waals equation for a gas are designed to correct A. the pressure term (P +a/V2) for the attractive forces between particles. B. the volume term (V-b) for the finite volume of the particles. C. For the volume term (b) not

    asked by Mendi
  37. Stats: Joint Density Function

    Let the joint density function of X and Ybe given by: f(x)={kxy^2 for 0

    asked by Stephanie
  38. math

    suppose you want to take a karate class. the first class is january 16th. the class meets every week for 6 weekswhats the date of the last class? Start at 1/16 and add 7 days six times to get 1/23, 1/30, 2/6, 2/13, 2/20 Find the sum the each letter stands

    asked by erin
  39. Palindromes

    What is a palindrome that means excitement. What is a palindrome for Old cats who are forgetful (2 words) What is a palindrome for a hippie with no name (what would he say?) A palindrome for intelligent male sheep (2 words) What is a palindrome for

    asked by Lanna
  40. math+check!

    a sequence tn, is defined as all natural numbera that are neither perfect squares nor perfect cubes. what are the first ten terms? tn = {2, 3, 5, 6, 7, 10, 11, 12, 13, 14} is this correct? Yes, that looks correct.

    asked by Andrew!
  41. social studies

    what are the magiar rivers in the regin? Do you mean MAJOR rivers? If so, in WHAT region? Magiar is not an English word. Magyar means "Hungarian" in that language

    asked by siarah
  42. geography

    what are the three continents mainly between the equader and the north pole North America, Europe and Asia.

    asked by ed
  43. TO BETTY Please note that B is incorrect. If you read the webpage that Ms. Sue gave you, you'll know that A is the correct answer. Sorry for the mix-up. =)

    asked by Writeacher
  44. hamiltons financial program

    what r the four main parts to hamiltons financial program?

    asked by INEEDHELP!!!
  45. help!!

    Discuss the issues that colonists would have coming out of the Articles of Confederation. What impact would those issues have on the designing of the Constitution? We will be happy to critique your ideas. You can read about the problems with the Articles

    asked by Jack
  46. Help!!!

    What was ‚s‚ˆ‚… main concern for Anti-Federalists in passing the US Constitution as written after Connecticut Compromise? What does > mean ? Sorry, I missed. What was the main concern for Anti-Federalists in passing the US Constitution as written

    asked by Jack
  47. history

    1)the seond Continental Congress did all the the following except a)approve a ban on exports and imports with Great Britain. B)appoint George Washington military commander. 2)the first contnental congress did all the following except a)create a colonial

    asked by Sydney

    What is the uses a ribosome? wouldn't it be to feed the copy of DNA and to make proteins out of amino acids. What is an amino acid made of and what is it's uses? wouldn't that one be it is made of three bases and it is used to make proteins. sorry the

    asked by Sydney
  49. Help!!

    What was the main concern for Anti-Federalists in passing the US Constitution as written after the Connecticut compromise? please someone tell me good site and please tell me how can I answer it, Check this site.

    asked by Jack
  50. English

    How do you know whan a word is in standard or non-standard Canadian English? Many dictionaries contain this information. If you live in Canada, please check your library for a dictionary that shows standard and non-standard Canadian usage. Also --

    asked by Gina
  51. PE Basketball

    what is another name for end line,what is another name for it how long do you have the inbound ball??? baseline, 5 secs

    asked by Electra
  52. english HELP HELP


    asked by Synester
  53. ethics

    How can one apply effective business communication skills and cultural diversity ti their job and school? This is such a general question, that it's impossible to answer out of the context of your class. Please post your answer, and we'll be glad to

    asked by amanda

    What are the most significant similarities between the Chinese American and Japanese American [cultural] experiences? What are the differences? • Choose from any of the following topics when considering similarities and differences: o Level of

    asked by Dave
  55. Thin layer chromatography

    I've done some TLC plates using ethyl acetate with 0.5% glacial acetic acid as a solvent. The structure of these substances looks polar to me. I"m assuming that ethyl acetate is not very polar. Is this correct? Acetaminophen barely travelled any distance

    asked by Sheryl

    THANK YOU GINA AND SYDNEY. ITS SAME DIRECTIONS,PLEASE HELP ME.EXPLAIN IT. 4.FRUSTRATING LITTLE EXPERIENCE 5.MR.J. EDGAR HOOVER 6.AGGRAVATINGLY SMALL AMOUNT Frustarating- adj little-adj experience- noun Mr.j.edvgar hoover-noun aggravatingly-adj small-adj

    asked by Synester
  57. Easy Work

    How do you know whan a word is in standard or non-standard Canadian English? Can I fond a Canadian-english dictionary online possibly. And I understand what you have said. But if a word is given

    asked by Gina

    QUICKLY RUNNING OUT And your question is?? You've received several answers. Now, it's your turn. What parts of speech do you think these words are? I just need help. Well , do you think you can help me and explain it? I wasn't expecting people to give me

    asked by Synester
  59. pe basketball

    How long do you have to get the ball across the midcourt line? is it 8 seconds Look for backcourt violation.

    asked by Electra
  60. math

    please help... A new car is sold with or without antilock brakes, with or without a Cd player, with or wothout electric seats, and with or without a sunroof. How many different choices are there?? A new car is sold with or without antilock brakes, 2

    asked by sheila
  61. math

    i think this one is right..but im not sure..Argyle has 8 T-shirts and 5 pairs of shorts that he wears with either sandals or sneakers. If all the colors and patterns coordinate, how many different outfits can he make?? i think its 80...but im not sure one

    asked by sheila
  62. Microeconomics

    Can someone please help with this question... a) Outline the various roles played by prices in a market economy. b) In what way does the presence of externalities result in price information being inaccurate? Illustrate by considering: i) the case of

    asked by AliceP
  63. english

    Can someone read through my essay and make changes? This means a lot. Thank you so much. In the 17th century, English men and women came to the New World in the hope of practicing their religion freely. These people were known as the Puritans. Many

    asked by Anonymous
  64. Maths

    A group of students were asked some questions about how they travelled to school. 1/2 of them said they walked. 1/3 of them said they travelled by bus. In the group there were more than 20 students and less than 30. a) How many students were there in the

    asked by Katie
  65. Physical Chemistry

    At 25.0o C, the equilibrium 2 NOBr(g) ¡ê 2 NO(g) + Br2(g) is rapidly established. When 1.10 g of NOBr is placed in a 1.0 L vessel at 25.0o C, the equilibrium pressure is 0.355 bar. Calculate the equilibrium constant K. ( P¥è = 1 bar ) Angela. Read your

    asked by Angela
  66. P-Chem

    The equilibrium constant K for the hydrolysis of adenosine triphosphate (ATP) to adenosine diphosphate (ADP) and phosphate is 1.66 X 10^5 at 37o C, and ÄHè is -20.1 kJ/mol. Calculate ÄSè for the hydrolysis at 37o C. On the assumption that ÄHè and

    asked by John
  67. Need Help--ENGLISH

    What needs to be done to correct the following sentence? A first class employee is:dependable,loyal, and efficent. 1.Add a hyphen after the word first 2.Replace the colon with a comma 3.Remove the colon 4.Remove the colon and add a hyphen after the word

    asked by Kalli
  68. French help ASAP!

    I need information about d'Arsene Lupin.I have to do a report about it and I have no clue what I'm doing. Does anyone know of an english site with onfo abouit this I don't really want to read french. I put your topic into and here are the

    asked by cbarnett

    What nees to be done to correct this sentence? Do you know who said,"Genius iS a an immense capacity for hard work"? A. The sentence is correctly punctuated. B. Place the question mark inside the final quotation mark. C. Change the comma to a colon. Please

    asked by BETTY
  70. social studies

    What is the neen to preserve and protect the monuments Which monuments? Are they old, beautiful, new, poorly made? what are the magial rivers in the regin?

    asked by ayesha
  71. social studies

    Ways to protect the monument Which monument? Not only do we need to know which monument, but it would be helpful if we know what you want to protect it from. Are you talking about weather damage, vandalism or some other source of damage? I hope this helps

    asked by ayesha
  72. imperative sentence

    Helping my son and double checking, could the following 2 sentences be considered imperative sentences? 1. Josh go to your room. 2. You better go to your room. Thanks. The first sentence, Josh, go to your room. is imperative. It's a command or request. The

    asked by cher
  73. Grammar - Improving Tone

    Revise this paragraph to eliminate negative attitude and focus on postive ideas. "We are sorry to inform you that the Travel-Lite suitcase, Model X4457, you asked about is temporarily out of stock in our warehouse, just as Ms. Cummings of our Hilldale

    asked by Euridice
  74. science

    does anyone know anything about the richter scale and other earthquake measuring scales? thank you There are several good articles here:

    asked by charlotte
  75. writing

    Can you tell me what type of essay I would be writing in response to this statement: "What, if anything, is significant about an issue--expressed in a claim?" My instructor told us to write an essay to this question. A "claim" is usually the term for the

    asked by Diana
  76. math+ confused!

    okay the question is as follows: write the first three teerms of tn= 5(2)^ n-1. what is the value of tn/tn-3? I did not get I asked my teacher and he said: plug in n=1, n=2, n=3, to find t_1, t_2, t_3. plug in n-3 and n separately. then take the ratio of

    asked by eva!
  77. pigskin

    what is the question to pigskin week 4

    asked by alexis
  78. Question

    Am I PUNCTUATING THIS SENTENCE CORRECTLY? Have you read the article entitled"Increase Your Vocabulary"? Do Place a comma after the word entitled? Do I Underline the title of the article? It's punctuated just fine, except you need a space between entitled

    asked by BETTY
  79. math!

    determine two geometreic sequences whose first terms are 18x-9, 2x+8 and x-1 how would I go about and do this question? I have no idea! so a little help would be really helpful! thanks! A geometric sequence looks like a, ar, ar2, ar3, ..., arn, ... where a

    asked by Anonymous
  80. man alive! can someone check for me?

    I am so bad when it comes to mathI I think I am slow! okay so my question is : a recrusive sequence is defined by tn= 2tn-1, where t1= 5 define the first five terms of this sequnce: so would I go like this to figure them out: 2tn-1, where t1= 5 so

    asked by george