(25 pts) Answer the following questions clearly and succinctly, providing reason

Question

(25 pts) Answer the following questions clearly and succinctly, providing reasons, not just "yes" or "no 1. What is the primary difference between a "control volume and a "closed system" when we're discussing mass, heat, and work? Explain briefly 2. Heat and work are properties. Is this statement True or False? Circle one. Briefly explain your answer. a) True b) False 3. The quality of a water mixture can be 3.14. Is this statement True or False? Circle one. Briefly explain your answer a) True b) False 4 Pressure is a path function. Is this statement True or False? Circle one. Briefty explain your answer. a) True b) False S. Consider compressed liquid in a cylinder capped by a free and frictionless piston. The system is heated until finally all the liquid in the cylinder turns into vapor. Describe this entire process, including specifically what happens to the water's pressure and temperature, and to the piston's position.

Explanation / Answer

Solution:

(1) Control volume is an open system with fixed boundaries or fixed volume on which our interest is focused for thermodynamic calculations. It transfers both mass and energy.

But, in a closed system, no mass may be transferred in or out of the system boundaries. The system always contains the same amount of matter, but heat and work can be exchanged across the boundary of the system. (Answer 1)

(2) Work and heat are not thermodynamic properties, but rather process quantities: flows of energy across a system boundary. Systems do not contain work, but can perform work, and likewise, in formal thermodynamics, systems do not contain heat, but can transfer heat. Informally, however, a difference in the energy of a system that occurs solely because of a difference in its temperature is commonly called heat, and the energy that flows across a boundary as a result of a temperature difference is "heat". Answer (option b => False)

(4) Pressure is NOT a path function . It is an intensive property. he two most common path functions are heat and work.   Answer => (option b FALSE)

Thanks!!!

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