Determine the specific volume of superheated water vapor at 20 MPa and 400°C using (a) the ideal-gas equation and (b) the generalized compressibility chart. If the specific volume of superheated water vapor at 20 MPa and 400°C is 0.0099500 m3/kg, determine the error involved in the first two cases.

the first law of Thermodynamics and the second law of Thermodynamics.