5/ A 0.016773-m3 tank contains 1 kg of refrigerant-134a at 110°C. Determine the pressure of the refrigerant, using (a) the ideal-gas equation, (b) the generalized compressibility chart, and (c) the refrigerant tables.

A real gas exists at 130 C and 1.2 MPa. It is known that the critical temperature and critical pressure of the gas is 374.2 k and 4.059 MPa. It is also know that the ideal gas constant (R) of the gas is 0.12 kPa-m/ S/kg-K. In the question that follows, select the answer that is closest to the true value. Use the compressibility factor (Z) to determine the specific volume in units of m/kg. ,3, Tuesday Dece mber 7 2021 5:52:58 DM CST

Q6. A piston-cylinder device initially contains 1.4-kg saturated liquid water at 200oC. Now heat is transferred to the water at constant pressure until the cylinder contains saturated vapour only. Show the process on a T-v diagram and determine (a) the volume change of the tank, and (b) the internal energy change of the water. Figure 2 ​

Nitrogen is isobarically expanded from 100 kPa and 600 K until the volume doubles in a closed piston-cylinder. Assume that specific heats are constant and evaluated at the average temperature. Hint: Nitrogen is an ideal gas.Determine the amount of heat transfer into the system, in kJ/kg? Calculate the change of enthalpy, in kJ/kg?Calculate the change of internal energy, in kJ/kg? Report your answer to the nearest whole number using rounding.