Consider a rigid tank that contains 1 kg of air. The initial temperature and pressure of air is 25C and 1 bar, respectively. The system is now heated. At final state, the temperature of air is 80C. It is known that the amount of heat transferred to the 55.28 kJ 1. Name the process involved. 2. Write down the energy balance equation for the system. 3. Calculate the final pressure (in kPa) of the system.