Three-tenth of kg of saturated liquid water in a closed system consisting undergoes a polytropic process from pi = 15000 kPa to a final state where p2 = 5000 kPa, u2 = 125.3 KJ/Kg. Determine the amount of energy transfer by work, in kJ, for the process.

Five kg of water is contained in a piston–cylinder assembly, initially at 5 bar and 300°C. The water is slowly heated at constant pressure to a final state. The heat transfer for the process is 3260 kJ and kinetic and potential energy effects are negligible.Determine the final volume, in m3, and the work for the process, in kJ.

A piston-cylinder assembly contains 2 lb of water, initially at 100 lbf/in.² and 400°F. The water undergoes two processes in series: a constant-pressure process followed by a constant volume process. At the end of the constant-volume process, the temperature is 300°F and the water is a two-phase liquid-vapor mixture with a quality of 60%. Neglect kinetic and potential energy effects. Determine the work and heat transfer for each process, all in Btu. Part A Determine the work for the constant-pressure process, in Btu. W12-38.05 Your answer is correct. Hint Part B Your answer is correct. Determine the heat transfer for the constant-pressure process, in Btu. Q12--300.366 Part C Hint W23- Btu Determine the work for the constant volume process, in Btu. Save for Later Btu Btu Attempts: 2 of 4 used Attempts: 1 of 4 used Attempts: 0 of 4 used Submit Answer Part D The parts of this question must be completed in order. This part will be available when you complete the part above.

A piston-cylinder assembly contains 2 lb of water, initially at 100 lbf/in.² and 400°F. The water undergoes two processes in series: a constant-pressure process followed by a constant volume process. At the end of the constant-volume process, the temperature is 300°F and the water is a two-phase liquid-vapor mixture with a quality of 60%. Neglect kinetic and potential energy effects. Determine the work and heat transfer for each process, all in Btu. Part A * Your answer is incorrect. Determine the work for the constant-pressure process, in Btu. W12= 38.65 Btu

A fixed mass of gas undergoes changes of pressure and volume as shown below. V When the gas is taken from state P to state R by stages PQ and QR, 8 kJ of heat are absorbed by it and 3 kJ of work are done by it. When the same resultant change is achieved by stages PS and SR, 1 kJ of work is done by the gas. In this case which of the following represents the heat transfer? Select one: 8 kJ of heat are absorbed b. 4 kJ of heat are rejected 12 kJ of heat are rejected O d. 10 kJ of heat are absorbed

In a given experiment, we want to study the expansion of a gas from state i to state f by three different paths in the pV diagram. Based on the following figure, where the pressure is indicated in atmospheres and the volume in liters, determine the work done by the gas, in joules: (a) Along the path iaf (b) Along the path if. (c) Along path ibf.

Five lbs of propane is contained in a closed, rigid tank initially at 80 lbf/in.2, 50°F. Heat transfer occurs until the final temperature in the tank is 0°F. Kinetic and potential energy effects are negligible. Determine the amount of energy transfer by heat, in Btu. Q= i Btu