Answer:

Explanation:
From the question we are told that
Piston-cylinder initial Volume of air 
Piston-cylinder initial temperature 
Piston-cylinder initial pressure 
Supply line temperature
Supply line pressure 
Valve final pressure 
Piston movement pressure 
Piston-cylinder final Volume of air
Piston-cylinder final temperature 
Piston-cylinder final pressure 
Generally the equation for conservation of mass is mathematically given by
where
Initial moment



Final moment



Work done by Piston movement pressure




Heat function



Therefore


It is given mathematically that the system lost or dissipated Heat of
