At 14.0 atm and 25 degrees Celsius a 1.00 mole sample of ammonia in a cylinder fitted with a movable piston expands against a constant external pressure of 1.00 atm. At equilibrium, the volume and pressure of the gas are 23.5 L and 1.00 atm, respectively.
1. Determine the final temperature of the sample.
2. Determine the values of q, w, and delta U for the process.