$2\mathrm{.}41$ R$-134$a is in a sealed, rigid vessel of $2m^3$ as sat$-$

urated vapor at $50C.$ It is now cooled to $20C.$

Find the mass of the R$-134$a and the quality in the

final state.

$0\mathrm{.}000817+x(0\mathrm{.}03606-0000817)$

$x=0\mathrm{.}4,$conat $is$

$40\%,x$