Part A Air conditioners operate on the same principle as refrigerators. Consider

Question

Part A

Air conditioners operate on the same principle as refrigerators. Consider an air conditioner that has 7.00kg of refrigerant flowing through its circuit each cycle. The refrigerant enters the evaporator coils in phase equilibrium, with 54.0% of its mass as liquid and the rest as vapor. It flows through the evaporator at a constant pressure and when it reaches the compressor 95% of its mass is vapor. In each cycle, how much heat Qc is absorbed by the refrigerant while it is in the evaporator? The heat of vaporization of the refrigerant is 1.50

Explanation / Answer

or else take this answer also will helps you

For part A, you take the final gas amount minus the initial (keep in mind that they told you that the liquid at the beginning was 54% NOT the gas!). Take this to get heat absorbed (49% * 7g * Lv).
For B, it's a trick (sort of), the answer is delta U, which is the number they gave you in this part!

For part C, you take A + B, which should be 634500 J if I did my math right!

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