Air in a piston/cylinder device undergoes a continuous cycle as shown here: from State 1 to State 2 to State 3 to State 1 to State 2, etc... The air cycles between two pressures 130 kPa and 250 kPa and two specific volumes. The first process in the cycle (1 - 2) is an isothermal process at 375 K. Determine the following.

a) $v_{low}$ $\displaystyle \frac{\text{m}^3}{\text{kg}}$

b) $v_{hi}$ $\displaystyle \frac{\text{m}^3}{\text{kg}}$

c) the boundary work for Process 1 (State 1 to State 2) $\displaystyle \frac{\text{kJ}}{\text{kg}}$

d) the boundary work for Process 2 (State 2 to State 3) $\displaystyle \frac{\text{kJ}}{\text{kg}}$

e) the boundary work for Process 3 (State 3 to State 1) $\displaystyle \frac{\text{kJ}}{\text{kg}}$

f) total work done on the air for each complete cycle (BE CAREFUL. You are asked for the work done $\underline{\text{on}}$ the air, not $\underline{\text{by}}$ the air.) $\displaystyle \frac{\text{kJ}}{\text{kg}}$