An insulated empty container of 2 m3 is connected through a closed valve to a supply line of steam at 2 MPa and 450°C. The valve opens and steam flows into the container till the pressures equalize...

An insulated empty container of 2 m3 is connected through a closed valve to a supply line of steam at 2 MPa and 450°C. The valve opens and steam flows into the container till the pressures equalize (state 1) and then the valve is closed. Now the insulation is removed and the container is brought into contact with the environment at 100 kPa and 20°C till a new equilibrium state is reached (state 2)

a. Find the mass in the container at state 1.

b. Find the heat interaction for the complete process.

c. Find the change of entropy of everything involved in the process.