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clc
//initialization of variables
P=14.7 //lb/in^2
T=80+460 //R
M=18
Ps=0.5069 //lb/in^2
//calculations
Pair=P-Ps
R=1544/M
v=R*T/(144*Ps)
vair=53.3*T/(144*Pair)
wair=1/(1+vair/v)
wwater=vair/v/(1+vair/v)
//results
printf("Partial pressure of air = %.1f ft^3/lbm",Pair)
printf("\n Gravimetric analysis of air = %.4f",wair)
printf("\n Gravimetric analysis of water = %.4f",wwater)
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