clc
clear
//Initialization of variables
v1=0.1316
v2=0.2941
x1=0.5
x2=0.2
x3=0.8  
d1=14.87
d2=16.34
//calculations and results
vm=(1-x2)*v1+x2*v2
phi1=(1-x2)*v1/vm
phi2=(x2)*v2/vm
Hl2=vm*phi1*phi2*(d1-d2)^2 *10^3
disp("case 2")
printf("enthalpy = %.1f kJ/mol",Hl2)