Thermodynamics problem! How to find the temperature of a gas. Please Help! 1. The problem statement, all variables and given/known data In an engine, 0.45 moles of gas at 1050 degrees K in a cylinder expand adiabatically against the piston. The gas does 3200 J of work against the piston. What is the final temperature of the gas? 2. Relevant equations What formula do I use? 3. The attempt at a solution The only formula I can think to use is W=(-P)(delta V) But pressure and volume aren't given, and I can't find them with the given information.