Science & Mathematics - 12 December 2007

The ΔG° for the following reaction is +70.9 kJ.

SO3(g) → SO2(g) + 1/2ΔO2(g)
Given ΔG°f[ SO3(g)] = -371.0 kJ/mol, calculate ΔG°f [SO2(g)].

a.+441.9 kJ/mol
b.-300.1 kJ/mol
c.-5.23 kJ/mol
d.+300.1 kJ/mol
e.+5.23 kJ/mol

2007-12-12 02:13:38 · 1 answers · asked by Anonymous in Chemistry

No idea - maybe it is different but i'm sure it is the same.

2007-12-12 02:12:59 · 10 answers · asked by Anonymous in Physics

Ive heard Fairbanks Alaska, or Northern Maine/Canada.. anyone have facts on where the aurora borealis is most visible throughout the year?

2007-12-12 02:04:42 · 10 answers · asked by Peter Griffin 6 in Astronomy & Space

{8x - 7y = -5
{8x - 7y = 3

a. (-5 / 7, 3 / 8)
b. (8, 7)
c. (-5, 3)
d. no solution

2007-12-12 02:02:54 · 5 answers · asked by . 1 in Mathematics

2007-12-12 02:02:05 · 10 answers · asked by jrdnkasparek 1 in Weather

directly related to the:

a. product of the two masses.
b. velocity of the two masses.
c. distance between the two masses.
d. sum of the two masses.

2007-12-12 02:01:58 · 7 answers · asked by HOPING 1 in Physics

"A d-t graph of a person running with uniform motion then gradually slowing down to a complete stop"

i put time on the x axis and distance on the y,
and my graph looks like a pyramid...
is that right?

2007-12-12 02:01:16 · 4 answers · asked by Anonymous in Physics

If secQ ( theta ) = x + 1/(4x), prove that secQ+ tanQ = 2x, or 1/(2x)

This isn't a H.W. question. I have a test and it's kind of urgent

2007-12-12 02:01:12 · 6 answers · asked by manic.bookworm 2 in Mathematics

I am really stuck on this question for my chemistry homework.
Please Help
x

2007-12-12 01:59:48 · 1 answers · asked by Anonymous in Chemistry

in purification by distillation

2007-12-12 01:58:43 · 3 answers · asked by lynxelaine 1 in Chemistry

a. increases
b. decreases
c. remains the same
d. is unpredictable

2007-12-12 01:57:51 · 4 answers · asked by HOPING 1 in Physics

2007-12-12 01:57:43 · 8 answers · asked by john a 2 in Mathematics

2007-12-12 01:55:26 · 7 answers · asked by Anonymous in Geography

The frictional force of the box is 50N.
What is the gain in kinetic energy of the box when it is moved through a distance of 6.0m?
1- 240J
2- 300J
3- 540J
4- 840J

2007-12-12 01:55:20 · 3 answers · asked by Princess of Death 1 in Physics

im doing a science project on snow and i need the info by friday

2007-12-12 01:55:08 · 9 answers · asked by Anonymous in Weather

I am reading "The Intelligent Universe."

On page 40, there is a brilliant illustrated display of examples showing how evolution is impossible--if I understand correctly.

Now I'm up to page 91, where he says that our forefathers arrived in a meteor shower in a microbial state, and that we have since evolved therefrom--if I understand correctly.

Is he going to reconcile all this?

2007-12-12 01:54:12 · 3 answers · asked by suhwahaksaeng 7 in Biology

2007-12-12 01:53:39 · 3 answers · asked by Anonymous in Earth Sciences & Geology

Solve. (4a-2b)-(6a-8b)

2007-12-12 01:52:26 · 6 answers · asked by ivan m 2 in Mathematics

2007-12-12 01:47:36 · 8 answers · asked by Anonymous in Mathematics

In the movie back to the future, marty travels back to the future useing the delorian and lightning. Doc said that the car needed 1.21 gigawats to time travil. my question is can lightning hold 1.21 gigawats

2007-12-12 01:47:34 · 5 answers · asked by Anonymous in Physics

2007-12-12 01:43:14 · 8 answers · asked by Anonymous in Mathematics

What ghostly/paranormal experience did you have? How did it affect you later?

2007-12-12 01:40:58 · 14 answers · asked by Mary 1 in Paranormal Phenomena

Tell me some questions & answers for the right to animal test!!!

2007-12-12 01:40:28 · 5 answers · asked by Anonymous in Zoology

2007-12-12 01:39:36 · 14 answers · asked by Anonymous in Astronomy & Space

im doing a project for my earth space science class. me are having a debate on which is more deadly, a hurricane or a tornado. im playing the role of a meterologist. what does a meterologist do? any tips or opinions? thankss!

2007-12-12 01:34:58 · 9 answers · asked by Anonymous in Earth Sciences & Geology

2007-12-12 01:30:21 · 2 answers · asked by trek trek 5 in Chemistry

2007-12-12 01:30:01 · 2 answers · asked by Anonymous in Physics

i know the procedure on how to do it. i'm just confused because the rule we were given says that i should find the factors of the last term and then use the FOIL method...but the answer i keep on getting is 2x^2 - 5x + 3....

also, this is not a homework...this is my own personal exercise...

and i dont want the great court answering this!!! i'm new here, btw!!!! it's not my fault i didnt know how to express a square with ^2!!!!

2007-12-12 01:28:21 · 4 answers · asked by aerie13 1 in Mathematics

i got all this wrong on my test so if ur bord you will answer these.

Period when the amount of lighted side becoms increasingly smaller?

Phase that starts after a full moon?

Period after a new moon when more and more of the lighted side becomes visable?

Phase when the lighted half of the moon is facing the sun and the dark side faces the Earth?

Waxing phase of the moon when you can see half of the lighted side or one-quarter of the moons surface?

Phase of the moon when half of the moons surface is facing Earth is lighted?

Occurs when the moon moves directly between the sun and Earth and casts a shadow on part of the Earth? Solar eclipse? Right?

Please help me.. im an little idiot girl that needs to finish my test :-[ lol

2007-12-12 01:26:53 · 6 answers · asked by Anonymous in Astronomy & Space

if bubba has a pile of barium chloride weighing 200 greams, how many grams of water are in the sample?

barium cloride formula is BaCl2*2H2O
* is a dot in the middle of the two but i cant find something to make it-.-

2007-12-12 01:26:47 · 2 answers · asked by Shayna M 1 in Chemistry