A well-insulated rigid tank contains 5kg saturated liquid vapor mixture water with a dryness degree of 0.25 at 100kPa pressure. A 110 volt and 8 amp heater operates in the tank. a) How many minutes does it take for the water in the tank to completely go into the vapor phase? b) Show the T-v diagram with the saturated liquid and saturated vapor curves of the process.

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Q: 1. For this piston-cylinder setup, the piston is initially resting on the stops, and water is at a…

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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.