please solve ASAP

4. (35 points) A piston-cylinder device is filled with a gas at state 1 given in the table below. From state 1 to 2 , the gas undergoes a polytropic process during which Pv1.4= constant. From state 2 to 3 , the gas is cooled at constant volume. The gas finally expands at constant pressure to return to state 1. a. (5pts) Find the pressure and specific volume for each state (complete the state table left). b. (20pts) Find the heat transfer and work for each process (complete the process table right). c. (5 pts) Draw the cycle on a p-v diagram. Be sure to use arrows and label each state clearly. d. (5pts) Is this a power or refrigeration cycle? c) P-v diagram