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Homework Answers
Given data
Pressure, P = 3 bar = (3 / 1.01325) atm = 2.9607698 atm
Temperature, T = 50 °C = (273 +50) K = 323 K
And,
Universal gas constant, R = 8.205745 x 10-5 m3. atm . mol-1 . K-1
Molecular weight of ammonia (NH3) = 17.03 gm / mol = 17.03 x 10-3 kg / mol
Ideal gas equation is PV = nRT
Volume of 1 mole of NH3,
V = 8.95191 x 10-3 m3 / mol
The above solution (0.5256 m3 / kg) is based on the ideal gas equation.
Based on tabulated values for super heated ammonia(50° C) at pressure 3 bar (=0.3 MPa)
Specific volume = 0.51382 m3 / kg
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