Charles's Law states that the volume of a gas is directly proportional to its temperature (measured in Kelvin) when the pressure is held constant. This can be represented by the formula:
\[ V \propto T \]
where \( V \) is the volume and \( T \) is the temperature.
If the volume of a gas decreases while the pressure remains constant, the temperature must also decrease to maintain the relationship described by Charles's Law. In other words, if the volume goes down, the temperature goes down as well. Conversely, if the volume of the gas increases, the temperature would increase.
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