A diatomic calorically perfect ideal gas in a piston-cylinder assembly undergoes a cycle: from 1 to 2 is isothermal, from 2 to 3 is polytropic with n=1.4, for 3 to 4 is isothermal, and from 4 to 1 is again a polytropic with n=1.4. If v1= 1 m^3/kg, T1= 1000K, v3= 2 m^3/kg, and T3= 300K, find the specific heat transfer of the cycle.