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diff --git a/1247/CH5/EX5.4/example5_4.sce b/1247/CH5/EX5.4/example5_4.sce
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+clear;
+clc;
+
+// Stoichiometry
+// Chapter 5
+// Energy Balances
+
+
+// Example 5.4
+// Page 206
+printf("Example 5.4, Page 206 \n \n");
+
+// solution
+
+// using table 5.3
+// .25 kg/s toulene heated from 290.15K to 350.15K
+qm = .25/92  // kmol/s
+// reference 7
+fi = 2.717*10^-3*[1.8083*(350.15-290.15) + 812.223*10^-3*(350.15^2-290.15^2)/2 - 1512.67*10^-6*(350.15^3-290.15^3)/3 + 1630.01*10^-9*(350.15^4-290.15^4)/4]
+printf(" Heat required to be added to toulene = "+string(fi)+" kW.")