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diff --git a/551/CH5/EX5.23/23.sce b/551/CH5/EX5.23/23.sce
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+clc
+T1=293; //K
+V1=0.025; //m^3
+V3=V1;
+p1=1.05*10^5; //N/m^2
+p2=4.5*10^5; //N/m^2
+R=0.287*10^3;
+cv=0.718;
+cp=1.005;
+T3=293; //K
+
+disp("(i)Net heat flow")
+m=p1*V1/R/T1;
+T2=p2/p1*T1;
+Q_12=m*cv*(T2-T1);
+Q_23=m*cp*(T3-T2)
+
+disp("Net heat flow = ")
+Q_net=Q_12+Q_23;
+disp(Q_net)
+disp("kJ")
+
+
+disp("(ii) Net entropy change")
+dS_32=m*cp*log(T2/T1);
+dS_12=m*cv*log(T2/T1);
+dS_31=dS_32 - dS_12;
+disp("Decrease in entropy = ")
+disp(dS_31)
+disp("kJ/K") \ No newline at end of file