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Liquids generally contain more molecules when they are warm than when they are cold. As temperature increases, the molecules gain energy and move apart, allowing more molecules to occupy a given volume. Conversely, when liquids cool, the molecules lose energy and come closer together, resulting in a decrease in the number of molecules that can fit in that same volume. However, the total number of molecules in a fixed amount of substance remains constant regardless of temperature.

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2w ago

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