A sample consisting of 1.5 mol of perfect gas molecules with Cpm = 20.8) K-1 mol-1 is

Question:

A sample consisting of 1.5 mol of perfect gas molecules with Cpm = 20.8) K-1 mol-1 is initially at 230 kPa and 315 K. It undergoes reversible adiabatic expansion until its pressure reaches 170 kPa. Calculate the final volume and temperature and the work done