Question $4$: A $0\mathrm{.}8$m$3$ rigid tank contains carbon dioxide $($CO$2)$ gas at $250$ K and $100$

kPa. A $500$W electric resistance heater placed in the tank is now turned on and kept

on for $40$ min after which the pressure of CO$2$ is measured to be $175$ kPa. Assuming

the surroundings to be at $300$ K and using constant specific heats, determine $($a$)$ the

final temperature of CO$2,($b$)$ the net amount of heat transfer from the tank, and $($c$)$

the entropy generation during this process.