1. Liquid water enters a pump at 250C, 100 kPa and exits at a pressure of 5 MPa. Working Substance: System: Drawing:

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Q: TOC) P(kPa) u(kJ/kg) Phase description 175 2524.5 325 4000 325 Saturated liquid

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Q: W State (kg/s) (J/kg) Device (W) (W) A Wo B 15 A. 150 13 B 30 C 25 9. C D 5 123 4S

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A: The given information in the problem is listed in the following attached image:

Properties of Pure Substances

A substance with fixed chemical composition throughout is called a pure substance like water, air, and nitrogen. A pure substance does not have to be a single element or compound. A mixture of two or more phases of a pure substance is also a pure substance as long as the chemical composition is the same for all phases. These substances mainly have a constant/ uniform composition. The substances also have fixed boiling and melting points. A pure substance takes part in a chemical reaction to form predictable products.