expanded adiabatically until its pressure is again $1\mathrm{.}00$ atm $.$ It is then compressed at constant pressure back to its original state.

$($a$).$ Find. the temperature after the adiabatic expansion.

$C$

Enter a number.

$($b$)$ Find the heat absorbed or released by the system during each step.

$Q_{1-2}=$

$Q_{2-3}=,kJ$

$Q_{3-1}=,kJ,kJ$

kJ

$($c$)$ Find the efficiency of this cycle.

$q,\%$

$($d$)$ Find the efficiency of a Carnot cycle operating between the temperature extremes of this cycle.

$\%$