Ethane, with a mass of 1.44 kg, is contained in a piston-cylinder and expands isentropically from 1,104.13°C to 35.90°C. Determine the work done during the process in kJ.

A piston-cylinder assembly contains 22 kg of ammonia, initially at 80 kPa and -10°C. The ammonia is compressed to a pressure of 550 kPa. During the process, the pressure and specific volume are related by py- constant. Determine the work and the heat transfer, in kl. Step 1 Your answer is incorrect. Determine the work, in kl. Hint Save for Later Attempts: unlimited Submit Anwer Step 2 Your answer is incorrect. Determine the heat transter, in kd.

Calculate the decrease of enthalpy of 2 kg of Butane from 2 MPa, 800 K and 100 kPa, 0.35 kg/m3, in kJ. Round your answer to the nearest whole number and consider the system as an ideal gas.

1) A piston-cylinder assembly contains 10 kg of refrigerant 134a. Initially, 8 kg of SA134a is in the liquid phase and the temperature is -10°C. Then there is a slow heat transfer to SA-134a, the piston rises and the piston touches the stoppers when the volume is 400 liters. (a) Show the phase change in the P-V diagram, (b) the temperature of the system at the moment the piston contacts the stoppers, (c) calculate the work done during the process.