The closed container with the movable lid in Fig. 13–3 contains 4 kg of helium at a gage pressure of 100 kPa and a temperature of 20°C. Determine the initial density of the helium and its final...

The closed container with the movable lid in Fig. 13–3 contains 4 kg of helium at a gage pressure of 100 kPa and a temperature of 20°C. Determine the initial density of the helium and its final temperature and density if the force F compresses it isentropically to a pressure of 250 kPa.