Aclosed, rigid tank contains 5 kg of air initially at 300 k, 1 bar. as illustrated in fig. p6.50, the tank is in contact with a thermal reservoir at 600 k and heat transfer occurs at the boundary where the temperature is 600 k. a stirring rod transfers 600 kj of energy to the air. the final temperature is 600 k. the air can be modeled as an ideal gas with cv= 0.733 kj/kg·k and kinetic and potential energy effects are negligible. determine the amount of entropy transferred into the air and the amount of entropy produced, each in kj/