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clear;
clc;
printf("\t Example 2.3\n");
l=1; // tube length, m
m=0.01; // mass fraction
D12=2.84*10^-5; // diffusivity, m^2/s
a=1.18; // density, kg/m^3
J=a*D12*m/l;
//steady state flux of water from one side to the other,kg/(m^2*s)
printf("\t steady flux of water is %.2e kg/(m^2*s)",J);
//end
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