Finding Volume of gases!

  • Thread starter parwana
  • Start date
  • #1
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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!
 

Answers and Replies

  • #2
183
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Do you know the "ideal gas law"?
 
  • #3
mrjeffy321
Science Advisor
875
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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
 
  • #4
chem_tr
Science Advisor
Gold Member
609
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Charles' Law is okay, but if you find it hard to memorize all of the equations, then just use [itex]\displaystyle P\times V = n\times R\times T[/itex], but omit pressures, mole amounts, and Rydberg's constant, so what you'll get is plain Charles' Law.
 
  • #5
574
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I agree. I never memorized all the relationships between P, V, and T; they are all in the ideal gas law (memorize that, though).
 
  • #6
183
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mrjeffy321 said:
...but remember that temerature is in Kelvins, not C and definatly not F....
But you can use R if you like! ;) (R = F + 460)
 

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