A cylindrical tank of methanol has a mass of 40 kg and a volume of 51 L. Determine the methanol’s weight, density, and specific gravity

Calculate the pressure on 1.00 lb mol of Nitrogen gas ,N2, contained in a 100 ft^3 container at 70 degree Fahrenheit

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 0.44 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.