Thermodynamic problem. Determine the work necessary to compress a gas from an initial volume VI=90L to half the initial volume, if it is considered that the pressure varies with the volume according to the following equation p(V) = (350Kpa m3 ) / V  -  (50 Kpa/m3 ) V

When an ideal gas undergoes isothermal compression as a closed system, its specific internal energy Decreases Does not change O Increases

Refrigerant 134a expands in a piston-cylinder assembly from p₁= 200 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 * Your answer is incorrect. Determine the initial volume of the refrigerant, V₁, in ft³. V₁= 0.105743 ft3

be sure to follow sign convention.