Chemistry
posted by Coug .
A sample of helium gas initially at 37.0 degrees C, 785 torr and 2.00 L was heated to 58.0 degrees C while the volume expanded to 3.24 L. What is the final pressure in atm?
a)1.79
b)3.21
c)0.681
d).517
e)none of the above
please explainI need to know how to do thisthis is a practice problemI don't understand.

Chemistry 
CORRECTION
d) should read 517, not .517

Chemistry 
DrBob222
Use (P1V1)/T1 = (P2V2)/T2
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