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.