Questions Asked on
July 30, 2007

  1. Chemistry

    In a study of the following reaction at 1200K it was observed that when the equilibrium partial pressure of water vapor is 15.0 torr, the total pressure at equilibrium is 36.3 torr. 3Fe(s)+4H2O(g) (reversible arrows) Fe3O4(s)+4H2(g) Calculate the value of

    asked by Taasha
  2. im back : )

    I have a bunch of questions i hope someone could help me with? #1 what is the fifth term in this series? 4 1/2; 8 3/4; 13; 17 1/4 ? I know it is 21 1/2... but how to i figure that? #2 a manufacturer has 3,375 yards of material on hand. If the average dress

    asked by chrissy
  3. alg.

    Determine which two equations represent perpendicular lines. a) y=2x - 6 b) y=1/2x + 6 c) y= -1/2x + 6 d) y= 1/2x - 6 I know that perpendicular lines have negative recipricals, but I'm having trouble with this problem. I think the answer is b & c because

    asked by lacy
  4. chemistry

    calcium nitrate + sulfuric acid =caso4+? write a balanced chemical equation for this reaction including states. Ca(NO3)2 + H2SO4 ==> CaSO4 + 2HNO3 You don't have enough information to provide states. CaSO4 will be a solid so you write CaSO4(s). H2SO4 will

    asked by walter
  5. maths

    Class 5G is having a pizza party. Mrs Baker asked all the children to bring in 50c for their share of the pizza.The next day all the girls came with their 50c but Mrs Baker noticed that every girl had brought their 50c using different coins. Whatis the

    asked by JaredN
  6. Chemistry

    At 1100 K, Kp=0.25 for the following reaction. 2SO2(g) + O2(g) (reversible arrows) 2SO3(g) What is the value of K at this temperature? Do you mean what is the value of Kc? If so, use the Kp to Kc conversion formula. What is the Kp to Kc conversion formula?

    asked by Taasha
  7. economics

    suppose u are running the food concession at the athletic events of ur sell hotdogs,colas and chips.what are ur inputs of capital,labor and materials? if the demand for the hot dogs declines,what steps could you take to reduce output in the

    asked by christina sozaine
  8. i need help on these

    can someone help me figure these ones i know the answers but how do you get them? #3 It costs $1 per sqaure yard to waterproof canvas. What will it cost to waterproof a canvas truck cover that is 15'x 24'? answer; $40 #4 A part time employee worked a total

    asked by chrisssy
  9. Chemistry

    At a particular temperature, K=3.75 for the following reaction. SO2(g) + NO2(g) (reversible arrows) SO3(g) + NO(g) If all four gases had initial concentrations of 0.500 M, calculate the equilibrium concentrations of the gases. K=(.5+x)^2/(.5-x^2) solve for

    asked by Taasha
  10. Language/Communication

    Which of these statement is true? 1. Language is learned only when it is taught. 2. Language cannot be taught. 3. Maturation alone accounts for the development of language. 4. Most children are born with a potential for language. Wouldn't statement 1 be

    asked by Elyse
  11. Algebra word problem

    In 2004, the population of Mexico was 106.5 million. If Mexico's population continues to grow at an annual rate of 1.43%, then the population in 2015 will be 106.5 (1.0143)^11 million. a. find the predicted population in 2015 to the nearest tenth of a

    asked by Nik
  12. Chemistry

    Electrochemical Cells Out of platinum, iron, carbon and silver which would be the LEAST suitable as an electrode in a standard Fe3+/Fe2+ half cell, and why? Pt usually is the metal of choice for making measurements of this type, because of its inertness

    asked by Fiona
  13. Statistics

    A random sample of 14 college female students revealed their average height was 66.1 inches. a) How many students should be in a samle if a 95% confidence interval is to have a margin of error of only plus/minus 1 inch? Is that the only information you

    asked by Kasey
  14. Reposted Questions

    I asked these questions yesterday, and need to repost to see what others seem to think. 1. Asking children to place red and blue teddy bear counters into red and blue dishes helps them learn to: A. discriminate B. classify C. count D. remember 2. Which one

    asked by Tamera
  15. art

    why do artist use parallel lines that do intersect?? Thank you for using the Jiskha Homework Help Forum. Here is a definition of parallel: extending in the same direction, everywhere equidistant, and not meeting Just what art are you referring to? Parallel

    asked by K
  16. alg.

    Find the slope of the line passing through the points (–2, 1) and (3, 9). I know the equation to figure this out is: m = y(2) + y(1) ----------- x(2) + x(1) but its a multiple choice question and my answer is not the same as the choices. how exactly do I

    asked by lacy

    Are accomdation necessary for hanicapped acess In order to search for good results, you need to make sure you are spelling the words correctly. I searched for handicapped access accommodation in US, and here are the results:

    asked by LATUNJA JONES
  18. math

    Describe two ways to determine whether or not a given point is a solution of a line. Which way is more accurate? Why? The only practical and fast way is to substitute the coordinates of the point into the equation. If the equation is "true", then it is a

    asked by heather
  19. math

    Identify the contrapositive of the following statement, then decide if the contrapositive is true or false. "if angle 1 congruent to angle 2, then symbol representing angle 1andSymbol representing angle 2are vertical angles. Whether or not your statement

    asked by Kgirl
  20. chemistry

    write a balanced chemical equation for the following reaction including states not complete; no question.

    asked by walter
  21. maths

    how many times does minute hand rotate in one day? There are 60 minutes in an hour and 24 hours per day. With this information, can you answer your question? I hope this helps. Thanks for asking.

    asked by abhishek
  22. 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
  23. Chemistry

    Can someone please check my answers for me for the following questions. THANK YOU! 1) An ion with an oxidation number of 3+ can combine with three other ions, if each of these ions has an oxidation number of....3- 2) The correct formula for nickel(II)

    asked by anonymous
  24. English - Chaucer

    Can anyone out there help me with the story of Troilus and Criseyde? I have to answer some questions but I honestly am having a hard time understanding the Middle English Translation. This is a

    asked by Elda
  25. Grammar...Writing

    Hello, Does the following sentence contain a relative clause? The audience applauded the ambassador, who spoke for one-half hour. Thank You Scroll down a bit and read about relative clauses. What are the

    asked by Mandi
  26. calculus - derivatives

    can you please find the first 5 derivatives for: f(x) = (0.5e^x)-(0.5e^-x) f'(x) = ? f''(x) = ? f'''(x) = ? f''''(x) = ? f'''''(x) = ? thanks :) f(x) = (0.5e^x)-(0.5e^-x) f'(x) = 0.5 e^x + 0.5 e^-x f''(x) = 0.5 e^x - 0.5 e^-x f'''(x) = 0.5 e^x + 0.5 e^-x

    asked by COFFEE
  27. algebra

    Complete the ordered pairs for the equation y = 8x + 16. (?, 0),(1/8, ?),(0, ?)(-1/8, ?) my answers are: (-2,0),(1/8, 17), (0,16), (-1/8, 15) are these correct? yes

    asked by lacy
  28. alg.

    Write the equation of the line that passes through point (2, –6) with a slope of –5. I think this is a pretty easy problem, but I'm making it out to be harder than it really is. here is what I got: y=mx+b -6=-5(2)+b -6=-10+b =10 =10 b=4 the equation

    asked by lacy
  29. Government Essay

    My essay question is as follows: Describe the ways the government can effect the economy. Which is the way that provides the most impact on the economy? Why? Can anyone point me in the direction of websites/resources that can help me write this? Taxes on

    asked by Kasey
  30. all subjects

    sir thisregarding my son who is very lazy i writing he knows all but does not write what should i do All I can do is give you some links to some excellent study skills websites. The rest is up to him.

    asked by shalini
  31. bio

    Under what situation(s) can a single environment be both coarse-grained and fine-grained. I was thinking in an envirnomental where many organisms exist, such as a field. To a herbivorous insect, it would be course-grained while to a cow or horse it would

    asked by Kelly
  32. Algebra II

    (2x^2 + 10x + 12) divided by (x + 3) your question is (2x^2 + 10x + 12)/(x + 3) =2(x+2)(x+3)/(x+3) = can you take it from here?

    asked by Juri
  33. Written Communication

    What kinds of unwanted reactions might you get from readers of your messages? What steps would you take to ensure that the purpose of your message (whether informative, negative, or persuasive) is conveyed to your readers? As asked and answered previously:

    asked by Shelley
  34. 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
  35. english

    what is the verb of define The word "define" is a verb: =)

    asked by oso
  36. alg.

    Find the slope of any line parallel to the line through points (17, 4) and (5, 8). the slope of these is: 8-4 4 1 ----- = --- = --- 17-5 12 3 is 1/3 the correct answer? No you started with the y of the second point, so you have to start with the x of the

    asked by lacy
  37. Math

    I had to create a word problem. My final result was 8 < 8.56 but I am not sure how to graph it. I know you can't show graphs on this site but can you give pointers? 8 < 8.56 is an obvious statement of fact. I don't see how it can be the result of a word

    asked by Misty
  38. math

    Suppose you want to cover the backyard with decorative rock and plant some trees as the first phase of the project. You need 30 tons of rock to cover the area. If each ton cost $60 and each tree is $84, what is the maximum number of trees you can buy with

    asked by heather