Universal Gas constant $=8\mathrm{.}314k\frac{J}{k}$molK, molar mass air $=29k\frac{g}{k}$mol

$1$a$)$ A piston cylinder assembly initially contains water at $5$ bar and $320C.$ The initial volume is $1m^3$ and $1500$ kJ of heat is removed at constant pressure. Neglecting potential and kinetic energy effects,

a$)$ show the process on a P$-$v and T$-$v diagram

b$)$ what is the mass of water, in kg

c$)$ determine the work done, in kJ per kg $.$