$9\mathrm{.}34$ Which has the capability to produce the most work in a

closed system: $1$ kg of steam at $800$ kPa and $180C$ or $1$ kg of

R$-134$a at $800$ kPa and $180C?$ Take $T_0=25C$ and $P_0=100$kPa.

Answers: $623$ kJ $($steam$),47\mathrm{.}5$ kJ $($R$-134$a$)$

FIGURE P$9-34$