# Question: a determine the phase of each substance at the given...

###### Question details

(A) Determine the phase of each substance at the given state. Schematically identify each substance as a point on a P-T phase diagram. a) Water at 100 ˚C and 500 kPa b) Ammonia at –10 ˚C and 150 kPa c) R-134a at 0 ˚C and 290 kPa

(B) Determine whether refrigerant R-410a in each of the following states is a subcooled liquid, a superheated vapor, or a mixture of saturated liquid and vapor. a) 45 ˚C, 0.008 m3/kg b) 0.9 MPa, 5 ˚C c) 101 kPa, 0.2 m3/kg d) –20 ˚C, 0.4 MPa

(C) For 2 kg of water with the specific volume of 0.4 m3/kg at 333 kPa, find: (a) the quality, and (b) the volume of vapor. Use linear interpolation when obtaining data from tables.

(D) A sealed 100-liter tank contains 0.5 kg of water at 30 ˚C. If water is heated up isochorically, find the temperature and pressure in the tank when all water vaporizes. Use linear interpolation when obtaining data from tables.

(E) Find the pressure and quality of CH4 at T = –100 ˚C and v= 0.016 m3/kg. Use linear interpolation when obtaining data from tables.