Studying for a quiz tomorrow, this should be fairly simple. A rigid tank contains 1 kg of air at 500 kPa and 400 K. As a result of heat transfer to the tank, the temperature and pressure of the tank increase to 600 K and 750 kPa, respectively. Determine the boundary work done during this process. Solution Here the Container is rigid so there is no change in volume So therefore Work Done = Zero.