(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

1 mole of an ideal gas is at 7 atm pressure, occupies 6L and has an internal energy of 508 J. the gas is first cooled at constant volume until its pressure is 1 atm. It is then allowed to expand at constant pressure until its volume is 8L with an internal energy of 814 J. Calculate the work done by the gas. Answer in units of J.

2. Relevant equations

Work = P * DeltaV

PV = nRT

Work = nRT

3. The attempt at a solution

I tried doing the last equation, but I do not know the temperature. For P*V, which P do I use, the 7atm or 1 atm? I know I have to convert to Pa and the m^3.

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Calculate the work done by an ideal gas.

**Physics Forums | Science Articles, Homework Help, Discussion**