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+// Example 7_6
+clc;funcprot(0);
+// Given dataS
+m=3.00;// lbm
+T_1=100.0;// °F
+x_1=80.0/100;// Quality of steam
+p_2=200;// psia
+T_2=800.0;// °F
+s_f1=0.1296;// Btu/lbm.R
+s_fg1=1.8528;// Btu/lbm.R
+s_2=1.7662;// Btu/lbm.R
+
+// Solution
+s_1=s_f1+(x_1*s_fg1);// Btu/lbm.R
+deltaS=m*(s_2-s_1);// Btu/R
+printf('\nThe change in total entropy,S_2-S_1=%0.3f Btu/R',deltaS);