5 kg of H₂O are contained in a closed rigid tank at an initial pressure of 2000 kPa and quality of 50%. Heat transfer occurs until the tank contains only saturated vapour. Determine the volume of the tank, in m^3, and final pressure.

b. Two cylinders are filled with liquid water (p = 998 kg/m³), and connected by a pipe line with a closed valve. Cylinders A (inside diameter = 42.75 cm) and B (inside diameter = 55 cm) contain 125 kg and 450 kg of water, respectively. The height h as indicated in Fig. 3 is 0.85 m. Determine the pressure (in kPa) of cylinder A and cylinder B on either side of the valve. If the valve is opened such that water flows to an equilibrium between the two cylinders, find the final pressure (in atm) at the valve location. Assume Po= 100 kPa. k Po B g Figure 3 Po A

Consider a tank containing gaseous Helium. It is perfectly insulated and rigid. There is a paddle wheel to stir the Helium, which is rated at 0.12. The paddle wheel is operated for 42 min. Determine the final equilibrium pressure of the He gas, in units of psia. The initial gas conditions are given in the table below: mass (Ibm) T (°F) p (psia) |1.3 68.1 43.5

Water is contained in a closed, rigid, 0.25 m3 tank at an initial pressure of 500 kPa and a quality of 80%. Heat transfer occurs until the tank contains only saturated vapor. Determine: (a) the fifinal pressure, in bar.  (b) amount of heat transferred to the system.