Q$2(25$ points$)$

One pound$-$mass of water fills a $2\mathrm{.}649-f{t}^3$ weighted piston$-$cylinder

device at a temperature of $400F.$ The piston$-$cylinder device is

now cooled in a constant$-$pressure process until its temperature is

$100F.$ Determine the final pressure and volume of the water.

Show this process on a $P-v$ diagram and on a $T-v$ diagram with

respect to saturation lines.