O Determine the phase of the following substancesand find the values of the unknown quantities. Nitrogen: P= 2000 kPa, 120 K. v=2, Z =? b. Nitrogen: 120 K. v 0.0050 m/kg, Z? e. Air: T= 100C, v= 0.500 m/kg. P=? d. R410a: T= 25 C,v=0,01 m/kg, P 2,h ?

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