Questions Asked on
July 23, 2010

  1. chemistry

    when iron is heated in a steam of dry chlorine, it produces a chloride that contains 34.5% by mass iron. calculate the empirical formula of this chloride.

  2. chemistry

    Take a cup of water, add sugar, and stir. If the resulting solution contains sugar crystals that do not dissolve, the solution is said to be? a)an unsaturated solution b)a saturated solution c)a homogeneous solution d)none of the above Is it d -

  3. chemistry

    When NH3 is prepared from 28 g of N2 and excess H2, the theoretical yield of NH3 is 34 g. When this reaction is carried out in a given experiment, only 30 g is produced. What is the percent yield?

  4. Chemistry

    An element that is malleable, ductile, and a good conductor of heat and electricity would be classified as a a)metalliod b)semimetal c)metal d)nonmetal

  5. chemistry

    A pair of electrons shared by two atoms form a what? a-metallic bond b-double covalent bond c-single covalent bond d-an ionic bond

  6. history

    Compare and contrast Populism and Progressivism. From what distinct groups of society did the two groups emerge? What was at the heart of their beliefs about how society should be organized? What were the Granger and Alliance Movements, and how did they

  7. Chemistry

    If all samples of a material have identical properties and composition, it is a-a compound b-an element c-a homogeneous mixture d-an element or compound

  8. social

    which is the smallest latitude

  9. Finance

    Ngata Corp. issued 12-year bonds 2 years ago at a coupon rate of 8.4 percent. The bonds make semiannual payments. If these bonds currently sell for 105 percent of par value, the YTM is ? percent

  10. Chemistry

    What is Delta H degrees for the gas-phase reaction below? CH4+ CL3 = CH3CL+ HCL Bond dissociation energies of CL-CL, C-CL, H-CL, and H-C are 243, 339, 431, and 414kj/mol respectively a)113kJ b)-113kJ c)263kJ d)-263kJ Can somebody teach me how to solve

  11. Chemistry

    The energy necessary to start a chemical reaction is called the _______ energy. a)exothermic b)activation c)endothermic d)combustion

  12. Probability

    You are given 4 to 1 odds against tossing 2 tails and in 2 tosses of a fair coin. This means that you win $4 if you succeed and you lose $1 if you fail. Find the expected value(toyou) of the game. Round to nearest cent.

  13. Probability

    The table below shows the prizes and probabilities of winning(on a single $1 ticket) for a particular state lottery. Prize (dollars) Probability _____________________________________ 19 millon(jackpot) 1 in $76,275,360 150,000 1 in 2,179,296 5000 1 in

  14. chemistry

    how many grams of water will react with 600.0 grams of carbon dioxide?

  15. algebra

    the base of a triangle is 5cm greater than the height. The area is 33cm^2. What is the height and the length of the base?

  16. Finance

    Fine Breads Inc. paid out $26,000 common dividends during 2005, and it ended the year with $150,000 of retained earnings. The prior year’s retained earnings were $145,000. What was the firm's 2005 net income?

  17. Chem

    What is the Oxidation state of each on the atoms in a methoxy group, and does it have an overall charge? I keep of thinking the overall charge is -3 but then again it combines with carbon so it should just have one more electron so -1.

  18. chemistry

    Consider the following half-reactions: MnO4- + 8H+ + 5e- --> Mn2+ + 4H2O NO3- + 4H+ + 3e- --> NO + 2H2O Predict whether NO3- ions will oxidize Mn2+ to MnO4- under standard-state conditions.

  19. sheltered content instruction

    Discuss what level of cognitive demand and context is represented by a student who performs each of the folowwing activities

  20. algebra

    How many liters of 20% alcohol solution should Maria mix with 50 liters of a 60% alcohol solution to obtain a 30% solution?

  21. CHEM

    Which of the following mixtures will result in the formation of a buffer solution when dissolved in 1.00 L of water? i) 0.50 mol NaOH and 0.50 mol HCl. ii) 0.50 mol NaCl and 0.25 mol HCl. iii) 0.50 mol NaF and 0.25 mol HF. iv) 0.50 mol NaOH and 0.25 mol

  22. ETH/125

    Hello, I have finished my assignment for my class and I wanted to have someone read it and make sure I do not need any changes, and also if my APA formats are correctly identified. The assignment:Ethnic Groups and Discrimination ·Resources: Racial and

  23. Programming Essentials

    Design an interactive application that displays the following: •A main screen containing at least the company name, an animated image, and two buttons. One button allows the rental agent to proceed to a data entry screen and enter customer data (name,

  24. Graphing

    What are the steps to graphing this quadratic equation? Y=(-2x)^2

  25. Geology

    Where prevailing winds move across a mountain range, humid conditions occur on the windward side, and dry conditions occur on the leeward side. What explains the occurrence of the two contrasting climates? Thank you!

  26. geometry

    10x(to the 5th power)y(to the 4th power) over 15x(to the third power)y(tothe 9th power)

  27. Chemistry-lab help

    We flush our HPLC column with methanol followed by filtered deionised water and finally with mobile phase(ammonium acetate + glacial acetic acid + DI water) before we start running samples. Why is it necessary to flush with filtered DI water before

  28. '01 (continued)

    Ms. Sue, what are your thoughts on the year 2001? In my previous question, I said that it was a good and very bad year.

  29. math

    -23

  30. history

    Discuss the issues facing African-Americans from the 1870s to the Great De pression. Be certain to discuss demographic factors (i.e. - where they lived, economic standards, life expectancy, access to education), and political and civil rights issues.

  31. math

    determine whether 9 is the solution of the equation 7(x-2)=50

  32. basic algebra w/geomtry

    i have two questions 1)7,000,000 picoseconds how many microseconds 2) determine how far electricty travels in 7 microseconds. express your answer in miles. I do not want the answer to either question, I just need to know how to do the equations. Thank you.

  33. Math

    Pick a company that pays dividends, then calculate the expected growth rate of your company using the CAPM. Once this task is complete, calculate the expected growth rate using the Constant Growth (or Gordon Growth) Model. Please use Family Dollar -

  34. Chemistry

    We flush our HPLC column with methanol followed by filtered deionised water and finally with mobile phase(ammonium acetate + glacial acetic acid + DI water) before we start running samples. Why is it necessary to flush with filtered DI water before

  35. childcare

    plz check this. 1. In preparing a budget for a day care center, you must plan for taxes. As an employer, you must pay part of each employee’s _______ tax. A. Social Security C. state income B. federal income D. local 2. You’re trying to plan an

  36. algebra

    -6q^2 -40q - 50 how do you solve this i am factoring and having problems

  37. BobPursley

    h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 7 9 9 0 5 6 1 4 well it's on this page just CTRL+F Kate you can post here if you want thanks!

  38. Business Law

    * What is the difference between lobbying and bribery? * What argument could the SLOC members make that the payments made do not fit the definition of an illegal bribe (under the FCPA)? * What do you think is the appropriate punishment for the violation of

  39. Algebra I

    Ok so I kind of forgot how to do this so I looked up on the internet and was told divide the coefficent in the numerator of the highest degree by the highest coeficent of the highest degree in the numerator and that should be your horizontal asymptote one

  40. English

    In the book Stange Objects written by Gary Crew what is the description of Chsrlie Sunrise? What does he look like? Who is he? What does he say? Why is he at school?

  41. Chemistry

    Which of the following would involve the largest production of heat per mole? a)the burning of gasoline b)the evaporation of water c)the fission of uranium d)the freezing of water e)the rusting of iron Is it C) Which of the following would involve the

  42. Algebra I

    I'm stuck on this problem please help me find the range of this equation y = (x^2 - 4)/(x^2 - x - 12) I know that it is [1/3,-infintiy]U[?,infinity] yes I'm having trouble with that ? At first I was like ok there should be a horizontal asymptote at y=1

  43. finance

    Cooper Inc's latest EPS was $4.00, its book value per share was $20.00, it had 200,000 shares outstanding, and its debt ratio was 40%. How much debt was outstanding?

  44. algebra

    Selling shirts. If a vendor charges p dollars each for rugby shirts, then he expects to sell 2000  100p shirts at a tournament a) Find a polynomial R(p) that represents the total revenue when the shirts are p dollars each. b) Find R(5), R(10), and R(20).

  45. math

    Complete the ordered-pair solutions for the following equation. x/3 + y = 15 S = {(0, ), (3, ), (6, )

  46. financial 200

    Write a 200-300 word description of the four time value of money concepts: present value, present value of an annuity, future value, and future value of annuity. Descrive the characteristics of each concept and provide an example of when each of when each

  47. algebra

    Height difference. A red ball and a green ball are simultaneously tossed into the air. The red ball is given an initial velocity of 96 feet per second, and its height t seconds after it is tossed is 16t2  96t feet. The green ball is given an initial

  48. algebra

    Selling shirts. If a vendor charges p dollars each for rugby shirts, then he expects to sell 2000  100p shirts at a tournament. a) Find a polynomial R(p) that represents the total revenue when the shirts are p dollars each. b) Find R(5), R(10), and R(20).

  49. Finance

    Both Bond Sam and Bond Dave have 9 percent coupons, make semiannual payments, and are priced at par value. Bond Sam has 3 years to maturity, wheareas Bond Dave has 20 years to maturity. If interest rates suddenly rise by 2 percent, the percentage change in

  50. Finance

    Bond X is a premium bond making annual payments. The bond pays an 8 percent coupon, has a YTM of 6 percent, and has 13 years to maturity. Bond Y is a discount bond making annual payments. This bond pays a 6 percent coupon, has a YTM of 8 percent, and also

  51. Chemistry

    Generally, the solubility of gases in liquids increase with a-decreasing temperature & increasing pressure b-increasing temperature & decreasing pressure c-decreasing temperature & decreasing pressure d-increasing temperature & increasing pressure

  52. Chemistry

    Aluminum is an example of what? a-a compound b-a solution c-an element d-an alloy

  53. Chemistry

    Which of the following does NOT take place in a chemical reaction? a-new substances are formed b-neutrons are released c-energy is released or absorbed d-reactants disappear

  54. math

    At a carnival, there is a game where you throw a coin on a colored square. You are given 3 coins and can land on any square more than once. What is the probability of landing on a red square on your first toss, a red square on your second toss, and a white

  55. effective essay/healthful eating

    • Identify the topic and three subtopics for your expository essay. • Provide three credible sources from the Internet for your expository essay and cite the sources consistent with APA guidelines. • Address the following question: Which subpoint or

  56. Finance

    Shop-Til-You-Drop Inc. recently reported net income of $5.2 million and depreciation of $600,000. What is was net cash flow? Assume it has no amortization expense.

  57. Finance

    Madison Metals recently reported $9,000 of sales, $6,000 of operating costs other than depreciation, and $1,500 of depreciation. The company had no amortization charges and no non-operating income. It had issued $4,000 of bonds that carry a 7% interest

  58. physics

    The specific heat capacity of steel is 445 Jkg K. How much energy is required to raise the temperature of a 0.410g of kettle which contains 1.2L of water from 20 degrees Celsius to boiling point?

  59. speech english

    what will continue to make Othello worthy of critical study? through a critical evaluation and reflection of othello, analysing the construction, content and language of the text??? theres has to be readings suchs as poost modernist, modernist, femist or

  60. maths

    30%3/8

  61. algebra

    27 5/3 divided by 21 1/3 The answer sheet said 81. How do you get this?

  62. Math (easy question)

    Given the function f(x) = 1/(sqrt x) a. Does f(x) exist at x=0? b. Does f'(x) exist at x=0? c. Explain why integral (from 0->1) f(x)dx does exist. THANK YOU.

  63. math

    what is the answer to round to the nearest ten and the nubmer is 100.

  64. business

    • The acquisition cost is $35,000 paid at the time of installation. • It reduces the wait staff by one person: Figure $10 per hour, or 2020 hours per year + 18% benefits. • Money costs are 7% • The system may become obsolete in three years. a.

  65. Probability

    How do I do this probability math problem,--- In 2000, the population of a certain country was about 195 million. The overall birth rate was 18.8 births per 100. The overall death rate was 11.8 deaths per 1000. Based on births & deaths alone(not counting

  66. Probability

    I need help with this math question. Probability. In a poll, respondents were asked whether they were planning to vote in the local election. 475 respondents indicated that they were planning to vote and 496 said that they were not. What is the probability

  67. EDU

    What is the importance of the Ole Deluder Satan Act? Why was it made? I know that required that towns with 50 or more families establish schools, but what is the connection with the school system?

  68. Trig

    I was doing this problem sin^-1 (4/5) if I'm not mistaking most teachers would say that .927295218 radians is wrong is just an estimation and therefore is wrong so I'm justified in putting this on my paper instead right ( ln( (4i +3)/5)/i ) right? She

  69. Inverse functions

    Solve for y to determine the inverse y=2-(1/2x)

  70. college physics

    Hi given you have a half-wave rectifier and you know alternating current = VSin2(pi)fT, how do you calculate V(o)t?

  71. 2001

    The year 2001 was not only the start of the 21st century (surprisingly) but it was a good and very bad year. Did this website exist during that time?