T, °C P, kPa и, kJ/kg Phase description 400 1450 220 Saturated vapor 190 2500 4000 3040

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Q: T, °C Р. КРа u, kJ/kg Phase description 400 1450 Saturated vapor 220 190 2500 4000 3040

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Q: Explain the The liquid–vapor saturation curve of a pure substance (numerical values are for water).

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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.