Science & Mathematics - 18 July 2007

2007-07-18 04:55:23 · 12 answers · asked by Anonymous in Astronomy & Space

2007-07-18 04:51:45 · 5 answers · asked by laura b 2 in Other - Science

2007-07-18 04:51:15 · 6 answers · asked by Ana T 1 in Chemistry

2007-07-18 04:48:56 · 3 answers · asked by Anonymous in Chemistry

At elevated temperatures, carbon tetrachloride decomposes to its elements:

CCl4(g) -----> C(s) + 2 Cl2(g)
When a particular experiment was done at 700 K, the equilibrium pressures of carbon tetrachloride and chlorine were found to be 0.65 bar and 0.70 bar, respectively. Suppose this equilibrium system is expanded to twice its initial volume. Find the new equilibrium pressure.

2007-07-18 04:48:19 · 3 answers · asked by Anonymous in Chemistry

2007-07-18 04:46:06 · 20 answers · asked by Chris S 2 in Earth Sciences & Geology

2007-07-18 04:44:56 · 8 answers · asked by mishi khan 1 in Mathematics

I heard on the Discovery channel (or something like that) that there is a wolf species that has the blood of human. I have been interested in researching this kind of wolf because i love wolves.... If anyone could find the name of this kind of wolf i'd be very grateful.

2007-07-18 04:44:31 · 6 answers · asked by Anonymous in Zoology

Keq for the Haber reaction is 2.81E-5 at 472 C. If a reaction starts with 3.0 bar of H2 and 5.0 bar of N2 at 472C, what is the equilibrium pressure of NH3?

2007-07-18 04:42:29 · 2 answers · asked by Anonymous in Chemistry

2007-07-18 04:40:37 · 3 answers · asked by chris h 1 in Physics

Cyanic acid, HCNO, is a weak acid:
HCNO(aq) + H2O(l) -----> H3O+(aq) + CNO-(aq)
In a 0.20 M aqueous solution of HCNO, the concentration of H3O+ is measured to be 6.5E-3 M. Evaluate Keq.

2007-07-18 04:40:23 · 2 answers · asked by Anonymous in Chemistry

NaCl remaining has a mass of 0.724g. What was the mass % of NaCl in the solution?

2007-07-18 04:35:44 · 4 answers · asked by Anonymous in Chemistry

2007-07-18 04:32:06 · 3 answers · asked by Anonymous in Chemistry

does this mean it can no longer be used? why?

2007-07-18 04:31:28 · 2 answers · asked by cutejhynxsmile_026 1 in Physics

A uniform plank of length 5.0m and weight 225N rests horizontally on two supports, with 1.1m of the plank hanging over the right support. To what distance (x) can a person who weights 450N walk on the overhanging part of the plank before it just begins to tip?

The answer is .70m.
My friend and I tried to do this one yet we could never come up with the answer. We thought it would be pretty simple but it ended up not being. Any help anyone can give will be seriously appreciated

2007-07-18 04:30:55 · 2 answers · asked by dreamer_babe15 1 in Physics

2007-07-18 04:27:55 · 2 answers · asked by naga 1 in Engineering

was energy conserved? explain.

2007-07-18 04:27:38 · 3 answers · asked by cutejhynxsmile_026 1 in Physics

when we place the mirror in the direction of rays of sun,the mirror gets hot while when it is placed beside the direction of rays of sun,it does not get hot.why????????

2007-07-18 04:27:35 · 2 answers · asked by mishi khan 1 in Earth Sciences & Geology

2007-07-18 04:24:23 · 3 answers · asked by mkchawda 1 in Engineering

If the sun and planets were formed from a nebula, How did nickel-iron asteroids form in that zero gravity environment? Why aren't ALL asteroids of uniform composition?

2007-07-18 04:24:17 · 9 answers · asked by Anonymous in Astronomy & Space

1: Write in interval notation: | x | ≥ 3
(-∞, ∞)
(-∞, -3] U [3, ∞)
[-3, 3]
No solution


2: Write in interval notation: | 2x | < 6
(-∞, ∞)
(-∞, -3) U (3, ∞)
(-3, 3)
No solution


3: Solve and write in interval notation: | x + 5 | ≤ 4
[-9, -1]
(-∞, -9] U [1, ∞)
(-∞, -1] U [1, ∞)
[-1, 1]


4: Solve and write in interval notation: | x | - 2 > 9
(-7, 11)
(-11, 11)
(-∞, -11) U (11, ∞)
(-∞, -7) U (11, ∞)


5: Solve and write in interval notation: | -3x | + 2 ≤ 8
[-2, 10/3]
[-2, 2]
(-∞, -2] U [10/3, ∞)
(-∞, -2] U [2, ∞)


6: Solve and write in interval notation: 2 + | x/3 - 1 | > 6
(-9, 15)
(-3, 3)
(-∞, -3) U (3, ∞)
(-∞, -9) U (15, ∞)


7: Solve and write in interval notation: -1 + | 1/3 - x/2 | > -11/12
(-∞, 1/2) U (5/6, ∞)
(-1, 7/3)
(-∞, -1) U (7/3, ∞)
(1/2, 5/6)


8: Solve and write in interval notation: | 3 - x | > 7
(-∞, ∞)
(-4, 10)
(-∞, -4) U (4, ∞)
(-∞, -4) U (10, ∞)

2007-07-18 04:22:47 · 3 answers · asked by alex h 3 in Mathematics

Member since: May 28, 2007
Total points: 89 (Level 1)
Points earned this week:
--% Best answer

Ali Asharaf Khan
S Dye-penetrant testing, detecting cracks in metals, non-destructive test material/DP test?
I would request to be known what is non-destructive test material, it is also called DP test. Is Dye penetrant testing the non destructive test material and why is it called non destructive test material? Are there any alternatives to the dye penetrant testing? What is the advantages of dye penetrant testing over other testing for detecting cracks in metals? Is the production of dye penetrant material a profitable business. Kindly also let me know how many kinds of these dye testing material are there? Kindly aslo guide me through the phases of dyes testing. Kindly guide me as I want to puchase a plant producing this dye penetrant testing material. Thanks.

2007-07-18 04:21:56 · 4 answers · asked by Alloy 1 in Chemistry

2007-07-18 04:21:41 · 1 answers · asked by Anonymous in Chemistry

2007-07-18 04:19:17 · 5 answers · asked by mishi khan 1 in Earth Sciences & Geology

Clarify me about the difference between sigma,integration&addition.

2007-07-18 04:14:19 · 7 answers · asked by dinesh 1 in Mathematics

A 0.100-kg ball is thrown straight up into the air w/ an initial speed of 15.0 m/s. Find the momentum of the ball (a) at its maximum height and (b) halfway up to its maximum height.

2007-07-18 04:14:16 · 4 answers · asked by Anonymous in Physics

The addictive painkiller morphine, C17H19NO3, is the principal molecule in the milky jiuce that exudes from unripe poppy seed capsules. Calculate the pH of a 0.0291 M solution of morphine, given that Kb = 7.9E-7.

2007-07-18 04:05:56 · 2 answers · asked by Anonymous in Chemistry

In April 1998, one US dollar was worth 128.65 Japanese Yen.
Jean Changed 20,000 Yen into dollars.
How much did she receive? give your answer correct to 2 decimal place.
SHOW ME THE WORK HOW YOU DO IT!!!

2007-07-18 04:01:48 · 10 answers · asked by Anonymous in Mathematics

-Additional B-Vitamins (Above Those that Can Be Used as Cofactors In the Body) Results In Any Increase In "Energy"?

2007-07-18 04:00:14 · 3 answers · asked by Anonymous in Medicine

Have it appraised and maybe have some jewelry made from it. My sister is a designer, but she lives far away and is too busy to help much. Thanks!

p.s. Its purple, black, grey and brown. Its about the size of a fig. I found it on the ground by the lake.

2007-07-18 03:59:33 · 5 answers · asked by Sleek 7 in Other - Science