Science & Mathematics - 4 October 2007

A sample of gaseous SO3 was introduced into an evacuated flask so that the pressure of pure SO3 would be 0.4800 atm at 525 K.
But, SO3 decomposes to gaseous SO2 and O2.
At equilibrium the TOTAL pressure in the flask was measured at 0.6048 atm. Calculate Kp at this temperature for the reaction

SO3(g) ↔ SO2(g) + 1/2 O2(g)

2007-10-04 15:25:39 · 1 answers · asked by mimi 1 in Chemistry

I am wondering how and/or why specific molecular structure affects the way odor is processed in the human body.

Specifically, is the structure of aldehydes unique from the other odiferous compounds (esters, ketones, phenols, and any other groups of compounds), which in turn causes the body to process the compound differently than the other compounds?

Is there a group of compounds that are very close to aldehydes? If so, what are common sources of that compound found in the everyday world?

Why would a person be physically irritated by aldehyde-based odors, but not others?

I am a lay person, without chemistry knowledge, so I am not well-versed in terminology and explinations are helpful.

2007-10-04 15:21:59 · 1 answers · asked by Tapas 3 in Chemistry

How many elements are in :
U(9)?
U(25)?
U(p^2), for a prime?
U(p^k), for a prime and k a positive integer?

as much explanation as possible would be great!!

2007-10-04 15:19:25 · 2 answers · asked by Anonymous in Mathematics

copper wiring?
metal?

any other materials?

2007-10-04 15:18:49 · 3 answers · asked by Anonymous in Engineering

2007-10-04 15:09:35 · 2 answers · asked by volcomstar_77 2 in Chemistry

Calculate the molarity of caffeine in a 12 oz cola drink containing 28.7 mg of caffeine, C8H10N4O2. (1oz = 29.6 mL)

2007-10-04 15:08:59 · 2 answers · asked by Anonymous in Chemistry

2007-10-04 15:03:18 · 3 answers · asked by SeXxY&SmArT 2 in Chemistry

When a car accelerates forward, it tends to rotate about its center of mass. The car will nose forward:

a) when the driving force is imposed by the rear wheels (for front-wheel drive the car would nose downward).

b) whether the driving force is imposed by the rear or the front wheels.

2007-10-04 14:59:22 · 2 answers · asked by ? 6 in Physics

2007-10-04 14:58:25 · 6 answers · asked by Anonymous in Biology

And I am only 13 so I I would appreciate it if you said it in a little more simple terms. (sorry)

2007-10-04 14:53:29 · 5 answers · asked by Anonymous in Astronomy & Space

ok if the surface area of a cube 24 squared. FIND the volume of the cube plz give me the working out

2007-10-04 14:51:54 · 11 answers · asked by hamada 2 in Mathematics

Find the Molarity of the following

1. 2.5 grams of NaOH in 1 Liter.

2. 25 grams of HCl in 250 mL

3. 10 grams of KOH in 5 Liters

4. 4.5 grams of CaCl2 in 125 mL.

5. 30 grams of NH4OH in 2 Liters

6. 10 grams of MgCl2 in 1 Liter

7. 15 grams of NaCl in 100 mL

8. 5 grams of Calcium in 1 Liter

9. 20 grams of KI in 500 mL

10. 2 grams of CaSO4 in 2 Liters.

2007-10-04 14:48:41 · 1 answers · asked by blueeyegreen 1 in Chemistry

2007-10-04 14:47:20 · 5 answers · asked by NAN$!33 1 in Mathematics

2007-10-04 14:46:33 · 7 answers · asked by MAC529 1 in Mathematics

doin a report bout gold....

answer plz thanks.

2007-10-04 14:45:35 · 1 answers · asked by Jazz 1 in Chemistry

how do the names of covalent compounds differ from the names of ionic compounds???

2007-10-04 14:45:34 · 1 answers · asked by lellypopppsss :) 4 in Chemistry

Metrics measurements include?

2007-10-04 14:45:16 · 4 answers · asked by Annie Dean 1 in Mathematics

2007-10-04 14:45:09 · 8 answers · asked by Greg P 1 in Biology

Assuming only radial variations in planetary density, it can be shown that if a planet has a radius R, then to an observer at a distance r(> R) from the centre of the planet, all mass within the planet acts as if it is concentrated at the planet's centre. The escape velocity of an object placed in the gravitational field of a planet is given by Vescape = radical p2GM/r, where M is the total mass of the planet and G is the gravitational constant. Calculate the escape velocity at the Earth's surface. How does this compare to the escape velocity 100 km above the Earth's surface? How does that last figure compare to the velocity of a satellite in a circular orbit 100 km above the Earth's surface?

2007-10-04 14:44:50 · 1 answers · asked by -- 1 in Astronomy & Space

2007-10-04 14:44:05 · 9 answers · asked by leigh p 2 in Engineering

2007-10-04 14:42:38 · 4 answers · asked by Anonymous in Mathematics

Genesis 30:31-43 (King James Version)
King James Version (KJV)
Public Domain



31And he said, What shall I give thee? And Jacob said, Thou shalt not give me any thing: if thou wilt do this thing for me, I will again feed and keep thy flock.

32I will pass through all thy flock to day, removing from thence all the speckled and spotted cattle, and all the brown cattle among the sheep, and the spotted and speckled among the goats: and of such shall be my hire.

33So shall my righteousness answer for me in time to come, when it shall come for my hire before thy face: every one that is not speckled and spotted among the goats, and brown among the sheep, that shall be counted stolen with me.

34And Laban said, Behold, I would it might be according to thy word.

35And he removed that day the he goats that were ringstraked and spotted, and all the she goats that were speckled and spotted, and every one that had some white in it, and all the brown among the sheep, and gave them into the hand of his sons.

36And he set three days' journey betwixt himself and Jacob: and Jacob fed the rest of Laban's flocks.

37And Jacob took him rods of green poplar, and of the hazel and chesnut tree; and pilled white strakes in them, and made the white appear which was in the rods.

38And he set the rods which he had pilled before the flocks in the gutters in the watering troughs when the flocks came to drink, that they should conceive when they came to drink.

39And the flocks conceived before the rods, and brought forth cattle ringstraked, speckled, and spotted.

40And Jacob did separate the lambs, and set the faces of the flocks toward the ringstraked, and all the brown in the flock of Laban; and he put his own flocks by themselves, and put them not unto Laban's cattle.

41And it came to pass, whensoever the stronger cattle did conceive, that Jacob laid the rods before the eyes of the cattle in the gutters, that they might conceive among the rods.

42But when the cattle were feeble, he put them not in: so the feebler were Laban's, and the stronger Jacob's.

43And the man increased exceedingly, and had much cattle, and maidservants, and menservants, and camels, and asses.

2007-10-04 14:41:48 · 5 answers · asked by Guardian 3 in Biology

2007-10-04 14:40:48 · 6 answers · asked by Dawn Q 1 in Mathematics

trying to get the answer the 3x is exponent of 2 = 2x+1 is an exponent of 3

2007-10-04 14:40:08 · 3 answers · asked by keekee2977 1 in Mathematics

where are the valence electronc in an atom?

2007-10-04 14:39:10 · 4 answers · asked by lellypopppsss :) 4 in Chemistry

.50000= ?
.25000= ?
1.0000= ?
.984375= ?
0.625= ?
.96875= ?
.9375= ?
0.5625= ?
.9922= ?
29.00001= ?

2007-10-04 14:38:16 · 5 answers · asked by fastfingersalvin 2 in Mathematics

2007-10-04 14:34:38 · 1 answers · asked by nubian71 2 in Mathematics

So if you cross the IDL wesward, you gain a day. But if you go to the north pole and start circling it a thousand times going west every time you cross the IDL, will you gain 1000 days?

2007-10-04 14:33:18 · 4 answers · asked by Bigman 2 in Astronomy & Space

Who knows the exact specific name of the line that is shaped like a stair case in the Periodic Table of Elements? I'm not looking for the name of the elements that are near it but the actual name for the staircase itself. Thanks

2007-10-04 14:32:31 · 2 answers · asked by iLovePhysics 1 in Chemistry

Is U(p^2), for p a prime, cyclic? How do I show this is true or not?

2007-10-04 14:31:24 · 1 answers · asked by Anonymous in Mathematics