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diff --git a/555/CH7/EX7.8/8.sce b/555/CH7/EX7.8/8.sce
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+++ b/555/CH7/EX7.8/8.sce
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+// Implementation of example 7.8
+// Basic and Applied Thermodynamics by P.K.Nag
+
+clc
+clear
+
+Pa = 130; //kPa
+Pb = 100; //kPa
+Ta = 50; //degree C
+Ta = Ta + 273; //K
+Tb = 13; //degree C
+Tb = Tb + 273; //K
+Cp = 1.005; //kJ/kg K
+dS_sys = Cp * log(Tb/Ta) - 0.287 * log(Pb/Pa);
+dS_surr = 0;
+dS_univ = dS_sys + dS_surr;
+printf("dS_univ = %f kJ/kg K\n\n",dS_univ);
+
+if dS_univ<0 then
+  printf("Flow must be from B to A since entropy cannot be negative\n");
+elseif dS_univ>0 then
+  printf("Flow must be from A to B as entropy change is positive\n");
+else 
+    printf("Flow will not occur\n");
+end
+\ No newline at end of file