When recovering R134a into a recovery tank with the following specs. What will the tank weight when you have stop adding more into it. WC is 27 lb TW is 20 lb liquid refrigerant density of 134a, someone help me I'm really lost.

An air compressor in Albuquerque with an 8-gallon tank is initially at atmospheric pressure (12.2psia, zero gauge pressure) and 60°F. The compressor is turned on and the tank gauge pressure iselevated to 120 psig. At the end of the pumping interval the air in the tank is at 120°F.a) How much air (lb mass) was added to the tank?b) What will the gauge pressure be in the tank after it cools back down to 60°F.

Why is the denisty of water included in this equation?

Three types of fluids stack in an open tank as shown in the plot.  Select the expression of the gage pressure at location 1, P1(gage)=______       A. Patm   B. 0   C. 101.325 kPa   D. It can not be determined.

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thermodynamics

Manometer Question