3. A gas initially 103.4 kPa and 0.0566 m3 undergoes a process to 620.36 kPa and 0.017 m3 during which the enthalpy increases by 16.35 KJ, Cv = 10.217 kJ/kg-oK. Determine the cp of gas. (3 DECIMALS IN FINAL ANSWER PLS)

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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.