# Questions Asked onJanuary 26, 2007

1. ## Chem

Nitric acid is produced commercially by the Ostwald process, represented by the following equations: 4NH3(g) + 5O2(g) > 4NO(g) + 6H2O(g) 2NO(g) + O2(g) > 2NO2 (g) 3NO2(g) + H2O(l) > 2HNO3(aq) + NO(g) What mass of NH3 must be used to produce 1.0x10^6 kg

2. ## Chemistry

A sample of a mixture containing only sodium chloride (NaCl) and potassium chloride (KCl) has a total mass of 4.000g. When this sample is dissolved in water and excess silver nitrate is added a white precipitate (AgCl) forms. After filtration and drying,

3. ## algebra

Find the slope of the line through the given points. (2,4) (6,-3). m=y2-y1 over x2-x1. (-3)-(4) over(6)-(2) -3-4 over 6-2 -7 over 4. I plotted the two coordinates (2,-4) (6)(-3), and the slope is -7 over 4, right? How do you plot the slope? I think you

4. ## science

what are some of the advantages and disadvantages of genetic engineering? Genetic engineering allows thought to go into the design of genetic makeup, which is much faster than random mutation. Disadvantages? One has to try to explain it to the

5. ## Math

What is the mean proportional between 5 and 21? It is the square root of 5x21, which is 10.24695... Note that 10.24695/5 = 21/10.24695. That is why it is called the proportional mean. The ratios to the higher and lower number are the same

6. ## math,help

the problem says: one day, the temperature at 2:00AM was 44 degrees farenheiht , and by 2:00PM the temperature was 68 degrees farenheit. WHat was the hourly rate of temperature change? the possible answers are to pick from (a) 1 f/h (b) 2 f/h (c) 3f/h (d)

7. ## math,correction

Find four solutions for the equation 3x+5y=15 so the equation will turn to be y=-(3)/(5)x+ (3) and when i do the table i get these points for the solution (-2,4.2),(-1,3.60),(0,3),(1,1.8) ok Let me give you a help. Take the slope, denominator. 5. Now make

8. ## Kb

What is the Kb of benzene Please define Kb. Do you mean the boiling point elevation constant?

9. ## intermolecular force

In a mixture of ethanol and water, the strongest intermolecular force present between the two chemicals is ? is it hydrogen bond? yes its hydrogen bonding

10. ## math,algebra,help

Directions are simplify by combining like terms. x radiacal 18 -3 radical 8x^2 can someone show me how to do these types of problems. thanks I cant determine the second term. For the first, I think you meant x sqrt(18) which reduces to x sqrt (9*3) or 3x

11. ## Algebra

A rectangular box with the volume 320 cu ft is built with a square base and a square top. The cost is \$1.50/sg ft for the bottom, \$2.50/sq ft for the sides and \$1.00/sq ft for the top. Let x=the lenth of the base in feet. Express the cost of the box as a

12. ## Children's Literature Question

Which one of the following statements about poetry for children is True? 1. Literary standards for poetry are traditionally not as stringent as those for prose. 2. In good poetry,rhyme takes precedence over meaning. 3. Mother Goose rhymes are considered

13. ## anyone solve it....

Question 1 Describe the following descriptors. Give their type and the value of all their fields: i.dd 01234567h, 789abcdeh ii.dd 30405060h, 70809010h Please remember these things, especially #s 1 and 2: 1. This is a homework help website; please put your

14. ## chemistry

Which of the following statements is NOT true in regards to water, ethanol, and isopropanol? A. Water has the highest boiling point. B. H-O-H and C-O-H bond angles are all equal to 1095. C. Dispersion forces affect all three molecules. D. Two lone pairs of

15. ## Psychology Statistics

In a past class exam paper you have to complete a 2x3 mixed design ANOVA table, after that it asks what further tests should be done which i am unsure of - could someone please help? In another after completing a single factor ANOVA table it asks if this

16. ## science

what are some of the advantages and disadvantages of genetic engineering? Since this is not my area of expertise, I searched Google under the key words "genetic engineering advantage" to get these possible sources: (Broken Link Removed)

17. ## ict

why does a computer need a floopy drive as well as a hard drive It doesn't . None of my computers have floppy drives. Floppy drives were used in ancient times to have portable data input/export. These days we use CD/DVD drives and flash drives for portable

18. ## math, algebra

2a+2ab+2b I need a lot of help in this one. it says find two consecutive positive integers such that the sum of their square is 85. how would i do this one i have no clue i know what are positive integers.but i don't know how to figure this out. Let n be a

19. ## Int Algebra

The difference of two numbers is 7. The sum of the numbers is -1. What are the numbers? I've come up with the following equations: x-y=7 and x+y=-1. I can't seem to solve because there are no numbers on the left side of the equations. Any thoughts? Let's

20. ## Grammar

I am having trouble with identifying what thw words in a sentence are and groups of words. I will write a random sentence and could you please identify the words I have choosen. I will look at what you have choosen and understand why you have choosen so.

21. ## math, algebra,correction

I don't know if this is right. directions: Simplify each radical expression. (radical 3+5)(radical 3-3) i think its: radical 3+2 Life would be so much simpler if you would use parenthesis. Did you mean this? (sqrt3 + 5)(sqrt3 -3) ? multiply that out

23. ## Int Algebra

The difference of two numbers is 7. The sum of the numbers is -1. What are the numbers? I've come up with two equations: x-y=7 and x+y=-1 but don't know what to figure it out from there since there are no numbers on the left side of the equation to work

24. ## to bobpursley,math,correction

(sqrt3 + 5)(sqrt3 -3) ? multiply that out sqrt3*sqrt3 -3sqrt3 +5sqrt3 -15 now combine and simplify terms. yes the problems is: ((sqrt3)+5)((sqrt3)-3) if i put in my calculator what the squareroot of 3 it will give me 1.7 so if i it by decimals i get the

25. ## chemistry

hydrogen selenide can be prepaired by reacting aluminium selinide with water the other product being solid aluminium hydoxide AL(OH)3,write a balanced chemical equasion for the reaction of aluminium selenide with water including the phisical states of the

26. ## I need help

Answer the following questions: i.Which factors are important in multitasking for thread initialization? ii.What is the use of program segment prefix and where is located. iiiWhat is the difference between the interrupt routine and the strategy routine?

27. ## math,correction

the problem states. find the slope of any line perpendicular to the line through points (3,3) and (2,8). so did the formula m= (y2-y1)/(x2-x1) and from it i got -5 so the slope is -5 and anyline perpendicular to this sloe would be positive 5 is that

28. ## statistics definition

i have to find definitions and describe 208 words in my statistics class and for one of them it says: describe the deviation from a pattern of a graph. i don't actually get what it's asking me. i don't think it's pattern becuase i already have the

29. ## help half yr tests

whats a rock cycle ] http://www.rocksandminerals.com/rockcycle.htm http://www.classzone.com/books/earth_science/terc/content/investigations/es0602/es0602page02.cfm http://www.windows.ucar.edu/tour/link=/earth/geology/rocks_intro.html =)

30. ## Psychology

How do the behaviors that you listed relate to those reported by Sternberg and his colleagues? What behaviors did you list? What did Sternberg and his colleagues report? I searched Google under the key words "intelligence behavior Sternberg" to get these

31. ## math,correction

Problem states. which of the ordered pairs (0,0), (-2,10),(-1,-5),(-3,9) are solutions for the equation y=5x? my answer: all first three except the last pair. so yes to (0,0), (-2,10),(-1,-5) You are correct on (0,0) and (-1,-5). You are incorrect on

32. ## Economics - Cournot Model

There is one firm with a marginal cost of 0. It's monopoly price is 10. Another firm enters, also with zero marginal cost. Using the Cournot model, would would the new oligopoly price be? Can this question be answered without more information about the

33. ## math

Q. five times the sum of 3 and some number is 70. What is the number? I did the problem and got 13...but the answer is 11. I cannot figure out what I am doing wrong?? You must use parentheses when it says sum. 5(x +3) = 70 is correct set up. 5(x +3 )= 70

What is the radical expression of 1. (11)^-3/2 2. 2^(-1.5) Thanks I will do one. the exponent 3/2 means sqrt of something cubed. So (11)^-3/2 = 1/(11)^ 3/2 =1/ sqrt 11^3 = 1/ sqrt (11^2 * 11)= 1/ (11 sqrt 11)

35. ## Accountant

Many high-technology companies, like Nortel Networks, Micron Technology and JDS Uniphase, have written down massive amounts of their inventory. For example, Nortel Networks revalued some of its inventory parts at \$0, though the inventory initially cost

36. ## math

6a^2+4a+5+3a^2+7a-2 That is the same thing as 9a^2+11a+3, but what is the question? You have just written an algebraic expression, not an equation to be solved. assuming you are required to factorise the equation and the expression give by drwls it

37. ## Psychology

List behaviors that you can think of that are characteristic of academic intelligence and behaviors that are characteristics of everyday intelligence. Please post your ideas and we'll be glad to help you. I searched Google under the key words "intelligence

38. ## physical geography

If you travel westward along the 80th parallel north of the equator from the International Date Line to 150 degree East longitude, how far have you gone in both degrees of longitude and miles? Several sites calculate this distance. Check them out.

39. ## math

I can't figure out this problem: AX+BY=C SOLVE FOR Y AX+BY=C SOLVE FOR Y subtract AX from both sides. AX - AX + BY = C - AX combine terms. BY = C - AX divide both sides by B BY/B = (C-AX)/B Y = (C-AX)/B

40. ## determine missing #

in 2x2 grids 8,2 3,3 2,4 12,X 9,1 4,4 3,6 3,2 need to find X

41. ## math

I'm having a little trouble understanding the difference between the codomain and the range of a function. I'm reading the Wikipedia article on Codomain (I can't post the URL), but it doesn't make sense. I understand what they are saying and it still

42. ## ethnics

how do you think an average american's perception of muslims/arab americans are created Most people view other ethnic groups on the basis of their own personal experiences, their friends' and family's experiences, the community's perceptions, and the

43. ## patterson

1 __________________ 4 + 1 _________ 4+1 ______ 4 1/4 one over 4 plus (1 over 4 + 1 over 4 1/4)) the numerator in the denominator is 1.

44. ## bobpursley, math,correction

Let n be a postive integer, then n+1 is the next integer. sum the squares of those noumbers: n^2 + n^2 + 2n +1=85 solve for n. so this is what i did. n^2+2n+1=85 n^2+2n=85-1 n^2+2n=84 n=7056+4n