# Questions Asked onJuly 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

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

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

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

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

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?

7. ## economics

suppose u are running the food concession at the athletic events of ur college.you 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

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

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

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

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

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

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

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

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

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

17. ## WRITING

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 www.google.com for handicapped access accommodation in US, and here are the results:

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

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

20. ## chemistry

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

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.

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)) |

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)

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. http://academic.brooklyn.cuny.edu/webcore/murphy/troilus/ This is a

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 http://grammar.ccc.commnet.edu/grammar/clauses.htm Scroll down a bit and read about relative clauses. What are the

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

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

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

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

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. http://www.studygs.net/ http://www.how-to-study.com/

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

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?

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:

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

35. ## english

what is the verb of define The word "define" is a verb: http://www.answers.com/define =)

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