A mass of air (molecular mass equal to 28.97 g/mol) at 150 kPa and 27 ‰is contained in a frictionless piston-cylinder device. At the initial state, the piston is resting on a pair of stops and the total volume of occupied by the air is 400 L. The mass of the piston is such that a 350 kPa pressure is needed to move it. The air is now heated until its volume has doubled. Draw the process on the PV diagram. Determine: (a) the final temperature; (b) the work done by the air; and (c) the total heat added into the gas. (Hint: you might want to use Table I

There is 10-kg of water at room temperature and pressure in a closed piston-cylinder. Boundary work is then done on the system, compressing it until the volume decreases to one-half of it's original value. If the internal energy of the system decreases by 700 kJ/kg during this process and 200 kJ/kg of boundary work is done on the system, how much heat has been removed from the system, in kJ. Assume that system is sitting on a lab bench.How much heat is removed from the system, in kJ?

Refrigerant 134a expands in a piston-cylinder assembly from p₁ = 140 lb/in² and T₁ = 140°F to p₂ = 30 lb-/in² and T₂ = 80 °F. The mass of refrigerant is 0.46 lb. During the process, the work done by the refrigerant is 4.32 Btu. Kinetic and potential energy effects are negligible. Determine the initial volume of the refrigerant, V₁, in ft³, and the heat transfer for the process, in Btu. Step 1 Determine the initial volume of the refrigerant, V₁, in ft³. V₁= i Save for Later ft³ Attempts: 0 of 4 used Step 2 The parts of this question must be completed in order. This part will be available when you complete the part above. 4 Submit Answer

Inside a piston cylinder is 1 kg of pure water at 25°C. The piston is 15 cm in diameter and has a weight of 17 kgs. (State A) The pressure applied remains constant but heat is added to the water until the piston until it reaches the stoppers at a volume of 0.3 m^3. (State B) At constant volume, more heat is added until the temperature of the water reaches 300°C. (State C) A. Determine the quality of the fluid at State B. B. Determine the mass of the vapor at State B. C. Determine the pressure at State C. Liquid State A Vapor Liquid State A Vapor State A

Solve without any mistake

Q3) A cylinder is filled with 0.05 moles of an ideal gas at a temperature of 10°C. The cylinder has a freely moveable piston of area 0.02 m². The gas is compressed from a piston height of 15.5 cm to a piston height of 12.3 cm, remaining at a constant 10°C. Determine the magnitude of the work done on the system.

Need ASAPThree kg of air expands at constant temperature from a pressure of 880kPa and a volume of 2.5 cubic meters to a pressure of 210 kPa. Determine (a) Work (b) Heat (c) Change of Internal Energy (d) Change of Enthalpy

Nitrogen is contained in a 80L tank and the initial pressure andtemperature is 250 kPa and 200 °C, respectively. Note the ideal gasconstant for nitrogen is 0.2968 kJ/kg K Determine: The mass of the gas in kg. Now, if 0.05 kg of gas leaks out of the tank and in the process thetemperature drops to 33 °C. Find the gage pressure of the gasremaining in the tank in kPa. If the atmospheric pressure is 101.325kPa.

show the complete solution eith explanation and ffree body diagram.

In what state will water be if the pressure and internal energy are 750 kPa and 1000 kJ/kg, respectively?