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diff --git a/1808/CH2/EX2.2/Chapter2_Example2.sce b/1808/CH2/EX2.2/Chapter2_Example2.sce
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+clc
+clear
+//INPUT DATA
+//GASES IN THE ORDER CO2,CO,O2,N2
+p=[10,8,1.5,80.5];//percentage of gas
+m=[44,32,28,28];//molecular weight of gas
+
+//CALCULATIONS
+x1=m(1)*(p(1)/100);//individual moles per 100 kg of CO2 mixture
+x2=m(2)*(p(2)/100);//individual moles per 100 kg of CO mixture
+x3=m(3)*(p(3)/100);//individual moles per 100 kg of O2 mixture
+x4=m(4)*(p(4)/100);//individual moles per 100 kg of N2 mixture
+x=x1+x2+x3+x4;//Total moles per 100 kg mixture
+v1=(x1/x)*100;//percentage of gases on volume basis
+v2=(x2/x);//percentage of gases on volume basis
+
+
+
+//OUTPUT
+printf('(a)percentage of each gas by mass is %3.2f \n (b)mass of oxygen per kg of dry flue gases is %3.3f kg',v1,v2)
+
+
+
+