A cylinder containing hydrogen gas

[agadag]

Homework Statement

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)

Homework Equations

PV =nRT
and
Q= MCT

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]

hydrogen gas is diatomic.

 

[agadag]

sorry, i don't know what that means. Terrible at physics...

 

[denverdoc]

The MW of H2= 2 gms so your mass is off by a factor of 2 as well.