$2*$

$R=8\mathrm{.}314\frac{J}{m}ol*K,R=83\mathrm{.}14*cm\frac{*}{b}ar\frac{?}{\text{m}\text{o}\text{l}}*K,R=82\mathrm{.}06*c{m}^3*at\frac{m}{m}o\frac{l}{K}||$

I

$(2)$ at $P_2=5$ atm. Then it undergoes an $-$sochoric$-$process to point $(3),$ finally byt

adiabatic compression point $(1)-$is reached. $Cp=(\frac{7}{2})R,Cv=(\frac{5}{2})R||$

a$)$ Sketch this on a pressure versus volume diagramil

b$)$ Calculate $*V_1,V2,V3,T2,T3,P3T$

C$)$ Calculate the heat and work reguirements and the Intemal$-$Energy and Enthaler: changes for each branch and the total cycle.I