Solve the following problem:
Q: A closed system consisting of 5kg of a gas undergoes a process during which the relationship between pressure and specific volume is pv1.3 = constant. The process begins with p1 = 1 bar, v1= 0.2 m3/kg and ends with p2 =0.25 bar, Determine the final volume, in m3, and plot the process on a graph of pressure versus specific volume.