1. Dry air is contained in a tank wit fixed volume at 200oC and a pressure of 5 bar. Then the fluid is heated so that its temperature reaches up to 300oC. If the volume of the tank is 0.2 m3, find the transferred heat and final pressure and the change in entropy.
2. A tank with a fixed volume contains 1 kg of dry air at 200oC . If 200 kJ of heat is added to the tank determine the final temperature and change in entropy.
3. A tank with a fixed volume of 1m3 contains 2 kg of air at 100oC. If the pressure of air is increased up to 10 bar by heating the tank, find the change in entropy of the system.