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+clc();
+clear;
+
+// To compute the diffusion coeffiient for benzene in air
+
+T=25+273;                        // Temperature in degK
+p=1;                             // Pressure in atm
+Va=96;                           // Molecular volume of benzene in cm^3/gm-mol
+Vb=29.9;                         // Molecular volume of air in cm^3/gm-mol 
+Ma=78;                           // Molecular weight of benzene in gm/mol
+Mb=29;                           // Molecular weight of air in gm/mol
+Dab=0.0043*(T^1.5)*sqrt((1/Ma)+(1/Mb))/(p*(Va^(1/3)+Vb^(1/3))^2);
+printf("The diffusion coefficient is %.3f cm^3/sec ",Dab);
+\ No newline at end of file