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parwana
Nov13-04, 03:45 PM
A balloon is filled to a volume of 63.0 mL at a temperature of 58.0oC.
The balloon is then heated up at constant pressure to a temperature of 93.0oC.
What is the final volume of this balloon, in liters?

We havent even covered this yet in chem, but for some reason they are giving this as a hw problem, help please!

pack_rat2
Nov13-04, 06:11 PM
Do you know the "ideal gas law"?

mrjeffy321
Nov13-04, 06:17 PM
to figure this out use

CHARLES'S LAW:
V1 = T1
V2 T2


you know both the initial and final volumes and the initial and final tempertatures, just plug them into the equation, but remember that temerature is in Kelvins, not C and definatly not F.
to get Kelvins from C, add 273.


here is a page that explain all the gas laws in more detail:
http://www.chemtutor.com/gases.htm

chem_tr
Nov14-04, 02:04 AM
Charles' Law is okay, but if you find it hard to memorize all of the equations, then just use \displaystyle P\times V = n\times R\times T, but omit pressures, mole amounts, and Rydberg's constant, so what you'll get is plain Charles' Law.

Sirus
Nov14-04, 10:52 AM
I agree. I never memorized all the relationships between P, V, and T; they are all in the ideal gas law (memorize that, though).

pack_rat2
Nov23-04, 09:29 PM
...but remember that temerature is in Kelvins, not C and definatly not F....
But you can use R if you like! ;) (R = F + 460)