occupying 0.06 m3 is compressed reversibly to a pressure of 10.9 bar and specific volume of  0.5 m3/kg according to the law pvn = c. The fluid then expands reversibly according to the law pv2 = c to 2.8 bar.  A reversible cooling at constant volume then restores the fluid back to initial state. Calculate

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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.