1.5 kg of water is placed in a closed container. The vessel has a frictionless piston that...

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1.5 kg of water is placed in a closed container. The vessel has a frictionless piston that maintains a constant pressure. This water is initially all saturated liquid at 80°C, and is boiled into saturated vapor. The pressure opposing expansion can be assumed equal to the pressure inside the cylinder.

A. At what pressure does the water boil?

B. What are the initial and final volumes of the cylinder?

C. What is the work done in this process?

D. What is the change in internal energy of the water?

E. What is the heat added for this process?

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