1. For a certain ideal gas Cp = 8.58 cal/ mol-deg, What will be the final volume and temperature when two moles of the gas at 20°C and 15 atm are allowed to expand adiabatically and reversibly to 5...

Answer only number 2 and 3. Show complete solution.

Extracted text: 1. For a certain ideal gas Cp = 8.58 cal/ mol-deg, What will be the final volume and temperature when two moles of the gas at 20°C and 15 atm are allowed to expand adiabatically and reversibly to 5 atm pressure. 2. Find W, Qg DU and AH for the process given at #2 problem. 3. Consider again the gas in problem #2, but suppose that now the expansion takes place adiabatically against a constant pressure of 5 atm. What will be the final volume and temp of the gas? Find also W, Q, DU and AH for the process