n insulated box is initially divided into halves by a frictionless, thermally conducting

piston. On one side of the piston is $1\mathrm{.}0$ m$3$ of air at $400$ K$,3$ bar. On the other side

is $1\mathrm{.}0$ m$3$ of air at $400$ K$,1\mathrm{.}5$ bar. The piston is released and equilibrium is attained,

with the piston experiencing no change of state. Use the ideal gas model for the air and

determine:

a$)$ the final temperature of the air, in K$.$

b$)$ the final pressure of the air, in bar.

c$)$ the amount of entropy produced, in kJ$/$K$.$