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+//Example 3.25
+clear;
+clc;
+
+//Given
+delH1=-242;//heat of reaction (i) in kJ mol^-1
+delH2=-640;//heat of reaction (ii) in kJ mol^-1
+delH3=-540;//heat of reaction (iii) in kJ mol^-1
+
+//To determine enthalpy changes per kg
+nH2=200;//number of moles of hydrogen in 1 kg gas (mol)
+nO2=31.25;//number of moles of oxygen in 1 kg gas (mol)
+nCH3OH=31.25;////number of moles of methanol in 1 kg (mol)
+nF2=26.3;//number of moles of flourine in 1 kg gas (mol)
+
+delH11=delH1*(2*nO2);//enthalpy of reaction (i)
+mprintf('enthalpy of reaction (i) = %i kJ',delH11);
+
+delH22=delH2*(20.8);//enthalpy of reaction (ii)
+mprintf('\n enthalpy of reaction (ii) = %i kJ',delH22);
+
+delH33=delH3*(nF2);//enthalpy of reaction (iii)
+mprintf('\n enthalpy of reaction (iii) = %i kJ',delH33);
+//end
+\ No newline at end of file