Find the phase and missing properties of P, T, v, u, and x.
a. Water at 5000 kPa, u = 1000 kJ/kg (Table B.1 reference)
b. R-134a at 20oC, u = 300 kJ/kg
c. Nitrogen at 250 K, 200 kPa
Show also the three states as labeled dots in a T-v diagram with correct position relative to the two-phase region.