2.7 kg of Steam at 500 kPa and 400°C was cooled in a piston cylinder device until 80% condenses. What is the amount of heat rejected (kJ)? Select one: O A. 5968.9 O B. 6348.4 X C. 5834.3 D. 6097.2 OE. 6236.8

Q: ne. What is its final pressure (in atm)?

A: To find final pressure.

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A:

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Q: I have step by step but I don’t know how to read table and values ! Help with final calculations

A: Solution

Q: A. Explain the difference between the two processes in the light of the first law of thermodynamics.…

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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.