Wet steam at 200 degrees celcius and 20% moisture is compressed in an irreversible adiabatic process to a pressure of 2.30 MPa and a temperature of 225 degrees celcius. Determine: (a) the work of compression (b) the compression efficiency (c) the irreversibility of the process (d)the compression internal reheats NOTE: - INDICATE THE PV and TS DIAGRAM - INDICATE THE INITIAL AND FINAL STATE OF THE SUBSTANCE.

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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.