A rigid tank contains 0.8 kg of steam at 10 MPa and 300°C. The volume of the tank is A)11 m³ B)21 m³ C)4.3 m³ D)1.1 m³ E)0.23 m³

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Quizplus · Accepted Answer

Solved by EES Software. Solutions can be verified by copying-and-pasting the following lines on a blank EES screen. 
m=0.8 "kg"
V=m*v1 "m^3"
P1=10000 "kPa"
T1=300 "C"
v1=VOLUME(Steam_ IAPWS,T=T1,P=P1)
 
"Some Wrong Solutions with Common Mistakes:"
R=0.4615 "kJ/kg.K"
P1*W1_V=m*R*(T1+273) "Treating steam as ideal gas"
P1*W2_V=m*R*T1 "Treating steam as ideal gas and using deg.C"

A Rigid Tank Contains 0