Science & Mathematics - 3 February 2007

possible solutions...

a. (1/3) ln 2

b. (1/2) ln 2

c. (2/3) ln 2

d. (5/6) ln 2

e. none of these

2007-02-03 02:24:03 · 4 answers · asked by Anonymous in Mathematics

The reaction below was studied at a high temperature. At equilibrium, the partial pressures of the gases are as follows:
PCl5 = 1.4 x 10-4 atm, PCl3 = 2.4 x 10-2 atm, Cl2 = 3.0 x 10-1 atm.

What is the value of KP for the reaction?

PCl5(g) = PCl3(g) + Cl2(g)

2007-02-03 02:23:50 · 2 answers · asked by Anonymous in Chemistry

why it became yellow??

2007-02-03 02:23:15 · 7 answers · asked by seanqingboyang 1 in Other - Science

Just wondering - blood gives life - why not collect it from a warm dead body before burial.

2007-02-03 02:23:11 · 23 answers · asked by essa s 1 in Biology

Use the equilibrium constants for the following reactions
2NO(g) = N2(g) + O2(g) K1 = 2.4 x 1030

2NO(g) + O2(g) = 2NO2(g) K2 = 2.4 x 1012

to determine the equilibrium constant for the reaction below.


N2(g) + 2O2(g) = 2NO2(g)

K =?

2007-02-03 02:22:44 · 2 answers · asked by Anonymous in Chemistry

2007-02-03 02:22:13 · 3 answers · asked by Doug 2 in Mathematics

2007-02-03 02:22:13 · 9 answers · asked by Anonymous in Physics

Your plan was to be on the road at 9am but you did not leave your garage until 10am. You drove with the cruise control set at 75mph until stopping at noon. What is your average speed from 9am to noon?

The answer says its 2.4mph, but i keep getting 37.5 mph. can someone explain this?

2007-02-03 02:22:02 · 2 answers · asked by Puzzled 3 in Physics

Write the balanced chemical reaction which corresponds to the following equilibrium constant expression.
K = (PCO2)2/(PCO)(PO)

2007-02-03 02:21:11 · 2 answers · asked by Anonymous in Chemistry

a. x log 2

b. 2x log 3

c. 3x log 3

d. 2x log 2

e. none of these

2007-02-03 02:20:46 · 4 answers · asked by chris 2 in Mathematics

2007-02-03 02:19:24 · 5 answers · asked by esphen 1 in Weather

2.3
∫ [(cos x)/x] dx =
1.9

______________________________...
it has to be one of these solutions

a. - 0.181097

b. -0.139520

c. -0.094765

d. -0.048752

e. 0.164432

f. 0.246669

g. 0.328928

2007-02-03 02:18:35 · 2 answers · asked by Olivia 4 in Mathematics

Consider the balanced equation:

2A + 5B ↔ 3C + D

8 mol A are mixed with 19 mol B at an elevated temperature. After 4 mol of A have reacted, how much B is left?

Please show me the steps I have many more similar problems to do like this.. it will be greatly appreciated.. Thanks alot

2007-02-03 02:18:08 · 4 answers · asked by Anonymous in Chemistry

2007-02-03 02:16:18 · 1 answers · asked by Olivia 4 in Mathematics

Venlafaxin is an antidepressant. Is it possible to take it for more than a year?

2007-02-03 02:15:28 · 3 answers · asked by Zoltan D 1 in Medicine

Sally is a surveyor in the badlands in South Dakota. At point A on the south side of a deep canyon, she sights across to a fire tower on the north side of the canyon at point B. Then she moves a measured 500 feet along the south rim of the canyon to a point C on a line perpendicular to her original sight line AB. Setting up her transit again, she finds that her line of sight, CB, to the tower is 85 degrees. Correct to the nearest whole foot, how far is point C from the tower?

2007-02-03 02:15:06 · 4 answers · asked by Anonymous in Mathematics

2007-02-03 02:15:00 · 26 answers · asked by Anonymous in Astronomy & Space

ask all now ?

2007-02-03 02:14:46 · 2 answers · asked by wether kid 1 in Weather

2007-02-03 02:14:13 · 9 answers · asked by Anonymous in Astronomy & Space

5x10^-6?... or 6x10^-5???

2007-02-03 02:13:25 · 6 answers · asked by Paki Kuri 1 in Mathematics

it is advised that while performing experiments related to potentiometer,circuit shud b closed only at d time of taking d reading as excessive current flow causes heating of d circuit.how exactly does current affect temperature of the circuit?

2007-02-03 02:11:06 · 11 answers · asked by Saniya 1 in Physics

2007-02-03 02:10:01 · 13 answers · asked by Anonymous in Astronomy & Space

if yes where are they ?
are they are superior than us?

2007-02-03 02:09:33 · 21 answers · asked by avinash-mm2010 m 1 in Astronomy & Space

because ppl say its because there really heavy but there is no weight on the moon so that cant be it. i know its a wierd question but ive just always wondered that.

2007-02-03 02:08:54 · 4 answers · asked by Snow White 2 in Astronomy & Space

Does it increase or Decrease? Please Answer.

2007-02-03 02:08:51 · 9 answers · asked by Nivvedan S 1 in Physics

My 9 year old son is in the science fair. He wants to find out if 'antique' lamp oil burns different than 'new' brands. I have a bottle of OLDE VILLAGE SENTED/COLORED LAMP OIL MADE BY KAADAN. It is so old that the back lable reads:
Lamp oil...caution combustible mixture
N.Y.F.D. C. of A. No. 4521
Contr. Appvd. B.S.A.
Cal. #864-79-A

If anyone can help....please hurry, I have 2 days before this project is due. Thanks. by the way, the oil is green bayberry.

2007-02-03 02:08:32 · 3 answers · asked by sr_12116911 3 in Botany

Why does water and carbon dioxide, have different shapes even though their formulas are very similar?

2007-02-03 02:06:46 · 5 answers · asked by . 6 in Chemistry

2007-02-03 02:05:49 · 6 answers · asked by MOHIT 1 in Engineering

Right now it is 5 F outside, well below freezing. We have cases of pop out in the garage, that is not heated nor well insulated, but they seem to not explode. When I open a can, the pop is indeed slushy and begins to overflow, but they have yet to explode.

There have been a few times in my life that I recall a pop can exploding in the freezer. Why does it explode in the freezer but not in my garage? Also, is it "safe" to bring that pop inside now that it has been outside in this frigid weather for weeks?

2007-02-03 02:05:36 · 7 answers · asked by aivilo 3 in Other - Science

2007-02-03 02:04:21 · 2 answers · asked by Doug 2 in Mathematics