Problem $07\mathrm{.}034$E $-$ R$-134$a expanding isentropically in a closed piston$-$cylinder device

Three lbm of R$-134$a is expanded isentropically in a closed piston$-$cylinder device from $100$ psia and $\backslash (100^\{\backslash$circ$\}\backslash$mathrm$\{$F$\}\backslash )$ to $10$ psia. Determine the total heat transfer and the work production for this process. Use the tables for R$-134$a $($FROM THERMODYNAMICS AN ENGINEERING APPROACH TENTH EDITION$).$

The total heat transfer is

$-$ Btu.

The work production for this process is

Btu.