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//Section-14,Example-4,Page no.-PC.31
//To calculate pressure using ideal gas equation and vanderwall`s gas equation.
clc;
n=12 //moles
R=0.0821 //Latm/molK
T=298 //K
V=10.0 //L
P_1=((n*R*T)/V)
disp(P_1,'Pressure from ideal gas equation(atm)')
a=1.49 //atm/mol^2
b=0.0399 //L/mol
P_2=(((n*R*T)/(V-(n*b)))-((a*n^2)/(V^2)))
disp(P_2,'Pressure from Vander walls gas equation(atm)')
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