An insulated cylinder covered by a 500 kg frictionless piston of an area of 100 cm2 holds steam at 1 MPa and 300°C. The piston is held in position by a stop (Figure P XXXXXXXXXXThe environment is air...

An insulated cylinder covered by a 500 kg frictionless piston of an area of 100 cm2 holds steam at 1 MPa and 300°C. The piston is held in position by a stop (Figure P10.59). The environment is air at 100 kPa and 30°C. The stop is removed and the piston rises to a new equilibrium position 50 cm higher.

a. Find the work of the steam.

 b. What is the change in energy of the steam?

 c. Find the mass and the initial volume of the steam.

 d. Find the maximum work of the process.

 e. Find the irreversibility of the process.