clc
clear
//initialisation of variables
n1= 0.25 //mole
nh= 0.75 //mole
p= 400 //atm
T= 50 //C
vn= 0.083 //lit
vh= 0.081 //lit
//CALCULATIONS
V= n1*vn+vh*nh
//RESULTS
printf ('Volume of given mixture is = %.3f lit',V)