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diff --git a/944/CH3/EX3.14/example3_14_TACC.sce b/944/CH3/EX3.14/example3_14_TACC.sce
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+//example 3.14
+
+clear;
+clc;
+
+//Given:
+H1=-114.1;//standard heat of reaction:2NO(g)+O2(g)->2NO2(g);[KJ/mol]
+H2=-110.2;//standard heat of reaction:4NO2(g)+O2(g)->2N2O5(g);[KJ/mol]
+H3=180.5;//standard heat of reaction:N2(g)+O2(g)->2NO(g);[KJ/mol]
+
+
+//to find the heat of formation of N2O5
+//reacton:N2(g)+2.5O2(g)->N2O5(g)
+H4=(2*H1+H2+2*H3)/2;//standard heat of formation of N2O5[KJ/mol]
+printf("H(standard heat of formation of N2O5)=%f KJ/mol",H4);
+\ No newline at end of file