Question: Find the missing properties among (T, P, v, u, h and x if applicable) and give the phase of the substance and indicate the states

Find the missing properties among (T, P, v, u, h and x if applicable) and give the phase of the substance and indicate the states relative to the two-phase region in both a T-v and a P-v diagram.
a. R-12 P = 500 kPa, h = 230 kJ/kg
b. R-22 T = 10oC, u = 200 kJ/kg
c. R-134a T = 40oC, h = 400 kJ/kg

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