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+//Transport Processes and Seperation Process Principles

+//Chapter 1

+//Example 1.4-2

+//Introduction to engineering principles and units

+//given data

+//Pressure and composition calculation

+//A:carbon dioxide, B: carbon monoxide, C: Nitrogen gas, D: Oxygen gas

+pA=75;

+pB=50;

+pC=595; 

+pD=26;

+//above are the patial pressures of the given gases respectively in mm Hg

+P=pA+pB+pC+pD; //total pressure of the mixture

+mprintf("the total pressure in mm Hg is %d", P);//

+xA=pA/P;

+xB=pB/P;

+xC=pC/P;

+xD=pD/P;

+//above are the patial pressures of the given gases respectively

+mprintf(" the mole fractions of the carbon dioxide %f",xA);

+mprintf(" the mole fractions of the carbon monoxide %f",xB);

+mprintf(" the mole fractions of the nitrogen %f",xC);

+mprintf(" the mole fractions of the oxygen %f",xD);