Questions Asked on
July 29, 2007


    CALCULATE THE pH AND HYDROLYSIS IN 0.10 M AlCl3 SOLUTION.Ka = 1.2 X 10-5 FOR [Al(OH2)6]+3,OFTEN ABBREVIATED Al+3.TELL WHETHER pH IS ACID OR BASE.GIVE IONIC EQUATION. Help us a little by telling us how much you know to do and exactly what you don't

    asked by SHAWN
  2. Lord of the Flies- English

    What is the significance of Piggy's plea to join the expedition? -Thanks I have never read this book -- and don't plan to! But you can check at these sites for some ideas.

    asked by abc
  3. INB

    Last year Rattner Robotics had $5 million in operating income (EBIT). The company had net depreciation expense of $1 million and interest expense of $1 million; its corporate tax rate was 40 percent. The company has $14 million in current assets and $4

    asked by baby
  4. Chemistry (Inorganic)

    Given the two substances Sodium Nitrate (NaNO3) and Urea ([NO2]2CO), why is it that urea has a lower boiling point? I thought that the nitrate would because urea has the double bond which makes it more stable. Urea is covalently bonded. NaNO3 is an ionic

    asked by Vic
  5. fin

    Is stock price maximization good or bad for society? Since this is not my area of expertise, I searched Google under the key words "stock price maximization" to get these possible sources:

    asked by baby
  6. Algebra 2 - reposted for Erin

    asked by Writeacher
  7. Algebra

    A student earns $0.65 for each mistake she finds in a text. Sketch the equation of direct variation. An equation of direct variation is of the form M = k X where k us a constant. In your case M might be total money earned and X is the number of students.

    asked by Joy
  8. English

    How do you find the etymology for example of the word panic? In any dictionary (in print or online) there should be a section, often in brackets, that gives you the history of the word. Go here: Scroll down to just below the

    asked by Dennis
  9. educational technology

    what are the dehumanizing effects of war in violence, poverty and sex exploitation of women and children? please answer this question: what are the dehumanizing effects of war in violence, poverty and sex exploitation of women and children? thanks in

    asked by klar maesen
  10. math/algebra

    simplify. ã20/5 - 1/ã5 I come up with 2 different answers (1) 2 ã5/5 - 1/ã5 2ã5 - 1ã5 1/ã5 or (2) ã20/5 - 1/ã5 = ã(4 ) - 1/ã5 2 - 1/ã5 = 10/5 - ã5/5 = (10- ã5)/5 and neither are the answers I have to choose from

    asked by dee
  11. Algebra

    If y varies directly with x, and y = 110 when x = 100, find the constant of variation k. If y = kx, then 110 = k*100. Solve for k. Check my thinking. Wouldn't I divide 110 by 100=1.1? yes

    asked by Lynn
  12. Calculus - ratio test

    infinity of the summation n=1: (e^n)/(n!) [using the ratio test] my work so far: = lim (n->infinity) | [(e^n+1)/((n+1)!)] / [(e^n)/(n!)] | = lim (n->infinity) | [(e^n+1)/((n+1)!)] * [(n!)/(e^n)] | = lim (n->infinity) | ((e^n)(e^1)(n!)) / ((n+1)(n!)(e^n)) |

    asked by COFFEE
  13. algebra 2

    Define a variable and write an inequality. Then solve. A local summer basecall team plays 20 games each season. So far, they have won 9 games and lost 2. How many more games much they win this season to win at least 75% of all their games? i know that they

    asked by anonymous
  14. Human Services Administrator

    I am having trouble finding information on Government regulations dealing with teen abstinence. The sites given to me by my instructor provided are not giving me the information I need to complete my paper. I have done a search on this but only limited

    asked by Lindsay
  15. chemistry

    Topic: Iodometry 1. the reason why the Cu2+ solution has to be titrated immediately after addition of KI - I thought, because if allowed to stand for a long time, iodine will volatilize and a change in concentration of iodine will this right?

    asked by smiley
  16. calculus - ratio test

    Posted by COFFEE on Sunday, July 29, 2007 at 6:32pm. infinity of the summation n=1: (e^n)/(n!) [using the ratio test] my work so far: = lim (n->infinity) | [(e^n+1)/((n+1)!)] / [(e^n)/(n!)] | = lim (n->infinity) | [(e^n+1)/((n+1)!)] * [(n!)/(e^n)] | = lim

    asked by COFFEE
  17. fin

    What are the primary responsibilities of a corporate financial staff? Thank you for using the Jiskha Homework Help Forum. Here are some articles for y ou: 1. (Broken Link Removed) 2. 3.

    asked by baby
  18. chemistry

    Topic: Iodometry 1. the reason why the Cu2+ solution has to be titrated immediately after addition of KI Answered above.

    asked by smiley
  19. amth/algebra

    can someone help me with simplification: ã20/5 - 1/ã5 my first answer is 1/ã5 my second answer is 10 -ã5/5 but the answere I have to choose from are: (a) ã20 - 5ã5/ã5 (b) ã20 - ã5/5 (c) cannot be simplified (d) 1/5ã5 which is

    asked by dee
  20. calculus

    Xan you please tell me how you find the rate of change of Y= the square root of X when Y is increasing at 2 units per second and X=1? y= √x you are given dy/dt = 2 units/sec when x=1 I assume you want dx/dt, that is, how fast is x changing at that

    asked by john
  21. Algebra

    Adult tickets for a play cost $9 and child tickets cost $8. If there were 23 people at a performance and the theater collected $193 from ticket sales, how many children attended the play? A = number of adults C = number of children Set up two equations. A

    asked by T
  22. chemistry

    Topic: Iodometry 1. The importance of precipitating the Cu2+ ions using NH3 and redissolving it with acetic acid 2. What are other means of detecting endpoint in iodometry aside from adding starch indicator 1. A pH that is too low leads to excessive

    asked by smiley
  23. math

    transform the ff. into the form f(x) = a(x - h)2 + k: f(x)=x2-6x+4 f(x)=x2+4x+2 f(x)=3x2-5x+1 tnx a bunch!!!1 I'll do the third one for you, the first two are really easy f(x)=3x^2-5x+1 =3(x^2 - 5/3 x ) + 1 factored out the 3 from first 2 terms =3(x^2 -

    asked by olive
  24. science(chem)

    Breathing too much alcohol or too much HNO3 surely would not be very good but I doubt there would be a reaction that would produce toxic fumes other than the fumes from the HNO3 and/or the ethanol. On similar note, just yesterday an 18-wheeler spilled a

    asked by DrBob222
  25. calculus - interval of convergence

    infinity of the summation n=0: ((n+2)/(10^n))*((x-5)^n) .. my work so far. i used the ratio test = lim (n-->infinity) | [((n+3)/(10^(n+1)))*((x-5)^(n+1))] / [((n+2)/(10^n))*((x-5)^n)] | .. now my question is: was it ok for me to add "+1" to "n+2" to become

    asked by COFFEE
  26. math/algebra

    can someone check my answer: 3ã486 my answer is 27ã6 if not show me where I went wrong please you are right. (did you see my post to you earlier on how to create square root sign? Does it not work for you?) 3√486 = 3√81*√6 =27√6

    asked by dee
  27. Algebra

    Factor: 3x^2 - 27 3x^2-27=0 27+(3x^2-27)=0+27 3x^2=27 (3x^2)/3=27/3 x^2=9 x=3 Since there is 3x^2, one term must contain 3x and the other x. 27 factors into 3*3*3 or 3*9. With this information, you should be able to factor it yourself. I hope this helps.

    asked by Sarah
  28. Algebra

    How do I factor out: 21 - 4x - x^2 x^2 + 4x - 21 = 0 this is of the form (ax + c)(bx + d) = abx^2 + (c+d)x + cd here ab = 1 so c+d = 4 cd = -21 therefore c = 7 and d = -3 (x + 7)(x-3)=0 x = -7 and x = 3

    asked by Juri
  29. math.algebra

    other than factoring out the 9 there is really no simplification that can be made here 9sqrt6 - 9sqrt2 =9(√6 - √2) can someone help me simplify: 9sqrt6 - 9sqrt2

    asked by Reiny
  30. math

    write equation with slope of -1/2 with y intercept of 0,3 A straight line is y = mx + b where m is the slope and b is the y intercept. Just plug in the numbers.

    asked by Robin