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agadag
Dec6-09, 12:37 PM
1. The problem statement, all variables and given/known data

A cylinder contains 270 L of hydrogen gas (H2 at 0.0 C) and a pressure of 10 atm. How much energy is required to raise the temperature of this gas to 31°C? (answer needs to be kJ)

2. Relevant equations
PV =nRT
and
Q= MCT



3. The attempt at a solution
PV = nRT==> M= .12061 kg
Q = MC T
(.12061)(.014304) (31) ====> also tried using kelvins instead of celsius for temp...neither has worked

denverdoc
Dec6-09, 12:55 PM
hydrogen gas is diatomic.

agadag
Dec6-09, 02:18 PM
sorry, i don't know what that means. Terrible at physics...

denverdoc
Dec6-09, 02:19 PM
The MW of H2= 2 gms so your mass is off by a factor of 2 as well.