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+//ques-25.17
+//Calculating pressure for carbon dioxide using ideal gas equation and van der Waals equation
+clc
+V=8;//volume (in L)
+m=88;//mass of CO2 (in g)
+M=44;//molar mass of CO2 (in g/mol)
+T=273+27;//temperature (in K)
+a=3.6;//(in L^2 atm/mol^2)
+b=0.043;//(in L/mol)
+R=0.0821;//(in L atm/K/mol)
+n=m/M;//moles of CO2
+//Ideal Gas equation
+P1=(n*R*T)/V;
+//Van der Waals equation
+P2=(n*R*T)/(V-n*b)-(a*n^2)/V^2;
+printf("The pressure for carbon dioxide using ideal gas equation is %.2f atm and using van der Waals equation is %.3f atm.",P1,P2);