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diff --git a/914/CH2/EX2.6/ex2_6.sce b/914/CH2/EX2.6/ex2_6.sce
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+clc;
+warning('off');
+printf("\n\n example2.6 - pg36");
+// given
+d=1.2*10^-2;  //[m] - diameter of the hole
+Ca1=0.083;  //[kmol/m^3]
+Ca2=0;  //[kmol/m^3]
+L=0.04;  //[m] - thickness of the iron piece 
+Dab=1.56*10^-3;  //[m^2/sec] - diffusion coefficient of CO2
+A=(%pi*d^2)/4;  //area
+// (a)using the formula (Na/)A=(Ja/A)=-Dab(delCa/delx)
+intdCa=integrate('1','Ca',Ca2,Ca1);
+intdx=integrate('1','x',0,0.04);
+g=(intdCa/intdx)*Dab;
+printf("\n\n (a) The molar flux with respect to stationary coordinates is\n (Na/A)=%fkmol/m^2*sec",g);
+// using the formula na/A=(Na/A)*Ma
+Ma=44.01;  //[kg/mol] - molcular weight of co2
+na=(intdCa/intdx)*Dab*Ma*A*(3600/0.4539);
+printf("\n\n The mass flow rate is %flb/hr",na);
+