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diff --git a/1808/CH2/EX2.4/Chapter2_Example4.sce b/1808/CH2/EX2.4/Chapter2_Example4.sce
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+clc
+clear
+//INPUT DATA
+//C8H18 + 12.5 O2 + (12.5*3.76) N2 = 8 Co2 + 9 H2O + 47 N2// Stoichiometric equation for combustion of octane with 100 percent of air
+//C8H18 + 12.5 O2 + (12.5*3.76) N2 = 8 Co2 + 9 H2O + 47 N2// Stoichiometric equation for combustion of octane with 200 percent of air
+a=8;//Carbon balance
+b=9;//Hydrogen balance
+d=94;//Nitrogen balance
+c=12.5;//Oxygen balance
+
+//CALCULATIONS
+x=a+b+c+d;//Total moles of products
+x1=100*a/x;//Molal analysis of CO2
+x2=100*b/x;//Molal analysis of H20
+x3=100*c/x;//Molal analysis of O2
+x4=100*d/x;//Molal analysis of N2
+
+//OUTPUT
+printf('(i)Molal analysis of CO2 is %3.2f percentage \n (ii)Molal analysis of H2O is %3.2f percentage \n (iii)Molal analysis of O2 is %3.2f percentage \n (iv)Molal analysis of N2 is %3.2f percentage',x1,x2,x3,x4)
+