Questions Asked on
February 28, 2009

  1. Chemistry

    Use the dilution relationship (Mi x Vi = Mf x Vf) to calculate the volume of 0.500 M NaOH needed to prepare 500 mL of .250 M NaOH. This is my work ? L Solution = 500mL x (1L/1000mL) = .500L ? mol NaOH = .500 L Solution x (0.250 M NaOH/1 L Solution) = .125

    asked by Bob
  2. College Math

    A bucket contains orange tennis balls and yellow tennis balls from which 5 balls are selected at random, but assume that the bucket contains 7 orange balls and 6 yellow balls. (1) What is the probability that, of the 5 balls selected at random, at least

    asked by Sigmund
  3. Math

    when 3g^2-4g+2 is subtracted from 7g^2+5g-1, what is the difference?

    asked by Angie
  4. science

    In experiments involving a pithball electroscope, what causes the pithball to move? I believe the answer is B A. The pith material always holds a natural positive charge, and it is attracted to other charged objects. B. Electrons jump onto or off the

    asked by Jenny
  5. literature

    Please help me I'm not doing homework but research on Shakespeare's sonnet Shall I Compare Thee To a Summer's day? Why does Shakespeare refute his claim?

    asked by Literature Help
  6. science

    The Main Purpose Of The Grounding Pin In A Three-pong Plug For An Appliance Is To __? What's The Main Purpose Is? i believe the aswer is c a. boost the current flow to the appliance b. prevent short cicuits c. prevent electrical shocks

    asked by Jenny
  7. chem

    Methyl violet is an indicator that changes color over a range from pH=0 to pH=1.6. What is the Ka of methyl violet?

    asked by che,
  8. Planning 10

    What is impersonal principles?

    asked by Windster
  9. Algebra

    Reduce each rational expression to lowest terms. Assume that the variables represent only numbers for which the denominators are nonzero. (a^2-b^2)/(a-b)

    asked by alicia
  10. science

    What is the journey of a cheese sandwich-digestion?

    asked by megan
  11. statistics

    a survey is to be conducted to determine the proportion of U.S. voters who support additional aid to African nations to fight poverty and HIV/AIDS. Of the proposed sammple sizes which is the smallest that will guarantee a margin of error of no more than 4%

    asked by Rachel
  12. Science

    There are two light bulbs in a circuit, wired in parallel. A third light bulb is added again in parallel. What is the effect on total resistance of adding this third bulb? I BELIEVE THE ANSWER IS C.... a. Total resistance increases by one third. b. total

    asked by Jenny
  13. social

    what are the top 3 reasons for the success of mongol empire? => is this correct: Mongols ended up ruling neighboring sedentary states directly rather than extorting them as earlier steppe empires had done

    asked by Anonymous
  14. Math: Probability

    I need help. Here's the queston. Julia has 3 red marbles, 4 blues,3 yellow and 6 black in a bag. She takes one out at random. The probability its black ___ The probability its yellow ___ The probability it isnt red ___

    asked by Mark
  15. math

    a^2-b^2/a-b reduce to lowest terms

    asked by tom
  16. eng

    Is the thesis statement the same thing as the main point?

    asked by LOu
  17. Sonnet 130

    Can someone help me figure out the overall tone of the poem

    asked by Literature Help
  18. physics

    a hiker walks 10.0km(NE), 5.0 (W) and then 2.0km(S) in 2.5h. What is the hikers displacement?

    asked by alexia
  19. Math

    how do you find relative error?

    asked by Julie
  20. 12th grade

    Can you fine a love poem with ten syllables in it?

    asked by lashay
  21. Math

    how do you factor 16x^2-25y^2?

    asked by Angie
  22. Math

    how do you find half of 2^6?

    asked by lindsey
  23. English Ms. Sue

    Which is considered better therapeutic cloning or reproductive cloning? And what would be three main reasons why it is?

    asked by Michele
  24. Algebra

    Suppose you are at the gas station filling your tank with gas, The function C(g) represents the cost C of filling the tank up the gas tank with g gallons. Give the equation: C(g)=3.03g a) What does the number 3.03 represent? The cost of one gallon of gas;

    asked by A.W.
  25. HSPA

    alan wants to raise his grade from an 83 to 90 approx what precentage increase would that be?

    asked by Carry
  26. mastering chemistry

    A solution of volume 80.0 mL contains 16.0 mmol HCHO2 and 9.00 mmol NaCHO2. If 1.00 ml of 12 M HCl is added to this, what will be the resulting pH? (the only problem im having for this question is how to approach it, i know that by adding HCl the

    asked by chma11 student
  27. Biology

    How many amino acids are in the protein insulin???

    asked by Sam
  28. culture diversity

    What are some similarities and differences across cultures?

    asked by lois
  29. math

    which value of x makes the expression x+4/x-3 undefined and why? a. -4 b. -3 c. 3 d. 0

    asked by Angie
  30. college

    what will be the final temperature of a 514-g sample of water, intially at 10.0 celsius, after 90.8 kilo joules have been added o it ?

    asked by queen
  31. chem help

    You need to produce a buffer solution that has a pH of 5.08. You already have a solution that contains 10 mmol (millimoles) of acetic acid. How many millimoles of acetate (the conjugate base of acetic acid) will you need to add to this solution? The of

    asked by chem
  32. Math

    Please simplify. Write your answer using positive exponents. (8^2)^ -1 =? In case you are having trouble reading it, it translates to: (8 squared) to the -1 power (exponent) or (8 ^2) ^ -1 = ? Any ideas? I have an idea, but would appreicate some feed back!

    asked by Tia
  33. Finite Math

    Assume that 3 digits are selected at random from the set {1,3,5,6,7,9} and are arranged in random order. What is the probability that the resulting 3-digit number is less than 700? I know the sample space is P(6,3) but that is all I know. Help!

    asked by Willow
  34. science

    How many Amino Acids is in the protein insulin?

    asked by Samy
  35. chem help

    Ammonia,is a weak base with a Ka value of 1.8x10^-5 .What is the pH of a 0.22M ammonia solution?

    asked by chem
  36. Political Studies

    Hi. I kinda need some help. I need some against points on the topic "That Australia should have a space program" I have already looked at the other posts but I still need more. Oh and any Ideas for a possible split? Thanks in advance Minnie

    asked by Minerva Wisdom
  37. cultural diversity

    Complete the following matrix by identifying 7 to 10 leaders or legislative events from both the Civil Rights and Black Power movements. The first leader is provided as a model.

    asked by james
  38. maths

    help me simplify this 3/4*1/5*3/10 and 6 2/3 / 10/21

    asked by samantha
  39. Algebra

    Did I do thes right? 1. Suppose you are at the gas station filling your tank with gas. The function C(g) represents the cost C of filling up the gas tank with g gallons. Given the equation: a) What does the number 3.03 represent? The cost for one gallon of

    asked by A.W.
  40. Microeconomics

    If ticket prices and ticket sales have both been increasing steadily from 1998-2008. What would the Supply a Demand graph look like? Would it be just like a traditional one (like and X? I just don't get it.

    asked by Adam
  41. Physics

    a plane can fly at 200km/h in still air and has to reach a destination 600km north-east. a 50km/h wind blows from the west. in which direction must the plane head?

    asked by Candice
  42. dividing monomials

    this is the problem: 7a(-2)power b (-4)power c (-5)power divided by 14 b(3)power c(6)power how do you simplify this

    asked by Anonymous
  43. Education

    State five schoolarly definitions of guidians and counselling

    asked by Tosin osemeobo
  44. science fair project

    why cant you eat six saltine crackers in one minute

    asked by con
  45. prealgerbra

    what is the answer to simplifying this equation: 25a^-2 b^-5 c^8/40 a^5 c^9

    asked by ed
  46. math

    3-9^2 - 4(3)^2 + 8 - 2 how do you solve this?

    asked by maggie
  47. english

    unscramble it petostr

    asked by Anonymous
  48. Accounting

    I'm tryng to draft a End of the Month Income Statement and I'm not sure what items to look for to record under the Revenue section. Can anyone please help or advise me what to look for?

    asked by Precious
  49. US History

    Describe how the Cold War ideology that crystallized after WWII changes wartime alliances that had existed during the war Decribe how American Cold War policies and preactices influenced international realtions from the late 1940's to the mid 1950s

    asked by moon
  50. Science

    What happens when you rub an ebonite stick with a wool cloth? (Choose below) I belive the answer is B? a. Electrons are transferred to the stick, causing it to take on a negative charge. b. Electrons are transferred to the stick, causing it to take on a

    asked by Jenny
  51. English

    I think they do, but can someone tell me if these 3 sentences contain conjunctive adverbs: It is one thing to have a baseball card from that era; undoubtedly, to have the opportunity to see Wagner play, though, that would be a real treat for us both. You

    asked by Mike
  52. nursing

    what aresome experiences a surgical unit in a hospital may see with critical nursing shortages

    asked by april
  53. Science

    There Are Three Resistance In A Parallel Circuit. Two Of Them Are Rated At 20 Ohms, The Other At 10 Ohms. What Is The Circuit's Total Resistance? I believe the answer D 5ohms A. 20 ohms b. 12 ohms c. 8 ohms d. 5 ohms

    asked by Jenny
  54. English

    I just want to make sure these sentences begin with subordinating conjunctions: Although there are a lot of concerned players, some haven't made the right choices. When I was young, I remember a time when the sports world was honest, and drug-free. As long

    asked by Mike
  55. English

    Do these 2 sentences have appositive phrases: To play ball like that again would be great. To have a fence like you did would be wonderful; I hope I have a fense in my backyard then, and the first time my grandson hits one over the fense I will pass the

    asked by Mike
  56. English

    Sorry, this is the last one Does this sentence begin with an adverb: Unbelievably, I found an article online that says that one like mine recently sold at an auction for over a million dollars. Does this sentence begin with a prepositional phrase: I hit it

    asked by Mike
  57. Science

    In a typical home electrical panel installation the main ground wire is conneted directly from a ground rod? I believe the answer is A A. case of the panel b. main breaker switch c. live bars d. electric meter

    asked by Jenny
  58. beware: do not read this poem

    what is the thme of this poem

    asked by alex
  59. science

    Which One Is The Right Answer? A Coulomb Is A Measure Of _____ Whereas An Ampere Is A Measure Of _____ ? I think the answers is A A.) Quantity & Rate --- B.) Rate & Quantity --- C.) Voltage & Resistance --- D.) Quality & Quantity

    asked by Jenny
  60. MATHS VERY URGENT :l

    In each fruit hamper there were 7 oranges and 5 apples. 9 hampers were sold. How many pieces of fruit were sold together?

    asked by Jessica.
  61. Maths

    Eight full buses of tourists are on a tour of tourist spots. Each bus holds 75 people including the driver and 2 tour guides. Two bus firm are equally responsible for supplying the buses for the tour. How many tourists is each bus firm carrying?

    asked by Jessica.
  62. basic Integration

    I have three questions which I apparently have 'wrong' according to the book, but I've done lots of other questions which I've gotten right using the same method and I have triple checked these answers for these three questions so I was wondering if

    asked by Anonymous
  63. english

    Which of the following is the best opening sentence for a business letter that you want to sound fairly informal? A. I am in receipt of your order of February 10. B. This letter is to make you cognizant of our receipt of your order. C. Your order of

    asked by dj
  64. Maths

    A plane when full contains 120 passengers, 2 pilots and 4 cabin crew. If 12 such planes leave an airport in one day, how many people in total leave?

    asked by Jessica.
  65. Shakespeare help

    On the same research paper I'm doing for the same poem "Shall I compare thee to a summer's day" I don't know what image that he demonstrates how summer is unpredictable.

    asked by Literature Help
  66. Chemistry

    Why might exposure to organic chemicals be a problem? Refer especially to halogenated hydrocarbons and alcohols. Help please. thx

    asked by Jane
  67. To Heather: Ethics

    I removed your post because you refer to materials that are not available to the Jiskha tutors. We have NO connection with Axia College! You've also not given us any indication of your thinking about this assignment.

    asked by Ms. Sue
  68. To Brandy: Cultural Diversity

    I removed your post because you refer to materials that are not available to the Jiskha tutors. We have NO connection with Axia College! You've also not given us any indication of your thinking about this assignment -- not even to the first instruction

    asked by Ms. Sue
  69. math - question

    Under what situation might one or more solutions of a rational equation be unacceptable?

    asked by red
  70. math

    -8x-22=

    asked by Jamie Crofts
  71. math

    35 divided by -5 ?

    asked by Jamie Crofts
  72. math

    -24 divided by -3?

    asked by Jamie Crofts
  73. CHEMISTRY

    For the alcohol functional group, why is the "H" not acidic and the "OH" not basic?

    asked by Zac
  74. Chemistry

    Why are carboxylic acids and phenols acidic?

    asked by Brad
  75. please answer!

    Does music affect a child's ability to nap restfully? answer:Yes. WHAT WOULD BE MY VARIABLE?

    asked by shortee
  76. Math

    is there an easy way to find the !@#$%^&tion rule for a table?

    asked by Angie
  77. english

    a strongly help purpose or goal ???

    asked by Anonymous
  78. math gcse probability

    Trevor and his 2 brothers and 5 friends are seated at random in a row of 8 seats at the cinema. What is the probability that Trevor has one brother on his immediate left and one on his immediate right? i need the workings

    asked by smart guy
  79. Repost: Science - for shortee

    Posted by shortee on Saturday, February 28, 2009 at 7:16pm. Okay, so i need help finding my independent, dependent, and control of my science fair project. my probelem is: Does music affect the ability of a child's to nap restfully. 3 types of music i

    asked by Writeacher
  80. Math

    how do you factor 2x^2+10x-12?

    asked by Angie
  81. science

    true or false: ecosystems with a lot of water support fewer organisms than ecosystems with little water?

    asked by Bibi 17
  82. English

    Does anyone know how long Hester Prynne in "the Scarlet Letter" was hold in jail (approximately) Thank you so much!!!

    asked by Brielle
  83. Eng

    Does anyone know any good websites that has notes/ essays, or any resources on It takes a family by Santorum

    asked by Jen
  84. Math

    Ryan estimates the measurement of the volume of a popcorn container to be 282 cubic inches. The actual volume of the popcorn container is 289 cubic inches. What is the relative error of ryan's measurement to the nearest thousandth?

    asked by Julie
  85. Cultural Anthropology

    Genelaized reciprocity,Balanced reciprocity, which one would more likely to be used by used car salesman? why?

    asked by mimi