$4-30$ A $0\mathrm{.}5-m^3$ rigid tank contains refrigerant$-134$a initially at $160$ kPa and $40$

percent quality. Heat is now transferred to the refrigerant until the pressure

reaches $700$ kPa $.$ Determine $($a$)$ the mass of the refrigerant in the gank and $($b$)$

the amount of heat transferred. Also, show the process on a $P-v$ diagram with

respect to saturation lines.