Determine the refrigerant name, chemical formula and the no. of fluorine, carbon, and hydrogen atoms for the following hydrocarbons/halocarbons: o R-23 o R-131 o Monochlorotetrafluoroethane

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Q: A plane slab, 8.5 cm thick, is generating heat uniformly at the rate of 12962 W/m-3. It is fully…

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Q: Find FA and FB.

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Q: X 35 kPa 40 kPa 95 kPa

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Q: 4kN/m 4m 2kN/m

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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.