A spring$-$loaded piston$-$cylinder device is initially filled with $0\mathrm{.}13$ lbm of

an R$-134$a liquid$-$vapor mixture whose temperature is $-30F$ and whose

quality is $80$ percent. The spring constant in the spring force relation

$F=kx$ is $37lb\frac{f}{i}n,$ and the piston diameter is $12$ in $.$ The $R-134$a undergoes

a process that increases its volume by $50$ percent. Calculate the final

temperature and enthalpy of the R$-134$a$.$