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+clc
+clear
+
+//Inputs
+//The Values in the program are as follows:
+//Temperature in Celcius converted to Kelvin(by adding 273)
+//Pressure in bar converted to kPa (by multiplying 100)
+//Volume in m^3
+//Value of R,Cp and Cv in kJ/kg K
+P1=25;
+T1=27+273;
+P2=5;
+T2=20+273;
+V1=0.7;
+Et=1.43;
+Pn=101.325;
+Tn=273;
+
+//Calculations
+R=(Pn)/(Et*Tn);
+m1=(Pn*V1)/(R*Tn);
+V2=(m1*R*T1)/(P1*100);
+m2=(P2*100*V2)/(R*T2);
+mf=m1-m2;
+printf('The mass of Oxygen used: %3.3f kg',mf);
+printf('\n');