3) A tank./well insulated, has two parts divided by partition. The first part incuded 5,5 kg of water at 600 kPa while the other part is evacuated. This partition is removed and the water expands to fill the entire tank. If the final pressure and temperature are 250 kPa and 150 °C, respectively, please determine a- The volume of the tank ( b- Temperature of the water for first part

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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.