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diff --git a/680/CH8/EX8.10/8_10.sce b/680/CH8/EX8.10/8_10.sce
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+//Problem 8.10:
+
+//initializing the variables:
+Tw = 60; // in deg F
+mdt1 = 1000; // in lb/h
+Pw = 1; // in atm
+Ps = 40; // in atm
+Ts = 1000; // in deg F
+Pd = 20; // in atm
+Td = 600; // in deg F
+H40 = 1572; // in Btu/lb
+H20 = 1316; // in Btu/lb
+H1 = 1151; // in Btu/lb
+Ht60 = 28.1; // in Btu/lb
+
+//calculation:
+dHv = mdt1*(H1 - Ht60)
+mdt2 = dHv/(H40 - H20)
+
+printf("\n\nResult\n\n")
+printf("\n mass flowrate of the utility steam required is %.0f lb/h",mdt2)
+\ No newline at end of file