a throttling steam calorimeter is an instrument used for the determination of the quality of wet steam flowing in a steam main line. it utilizes the fact that when wet steam is throttled sufficiently, superheated steam will form. if wet steam at 200 psia is throttled in a calorimeter to 15 psia and 300 F, determine the quality of the wet steam

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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.