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////Variable Declaration
m = 1.0 //Mass of Methane, kg
T = 230 //Temeprature of Methane, K
P = 68.0 //Pressure, bar
Tc = 190.56 //Critical Temeprature of Methane
Pc = 45.99 //Critical Pressure of Methane
R = 0.08314 //Ideal Gas Constant, L.bar/(mol.K)
M = 16.04 //Molecular wt of Methane
//Calcualtions
Tr = T/Tc
Pr = P/Pc
z = 0.63 //Methane compressibility factor
n = m*1e3/M
V = z*n*R*T/P
Vig = n*R*T/P
DV = (V - Vig)/V
//Results
printf("\n V-Videal %4.2f L",V-Vig)
printf("\n Percentage error %5.2f",DV*100)
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