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Required information

Problem $04\mathrm{.}031$E $-$ Energy balance for R$134$a in a rigid tank

A $15\mathrm{.}00-f{t}^3$ rigid tank initially contains saturated refrigerant$-134$a vapor at $160$ psia. As a result of heat transfer from the refrigerant, the pressure drops to $50$ psia.

Problem $04\mathrm{.}031$E$.$b $-$ Find temperature

Determine the final temperature. Use data from refrigerant tables.

The final temperature is $F.$