Charles' Law is a special case of the ideal gas law. It states that the volume of a fixed mass of a gas is directly proportional to the temperature. This law applies to ideal gases held at a constant pressure, where only the volume and temperature are allowed to change.
Charles' Law is expressed as:
Vi/Ti = Vf/T f
where
Vi = initial volume
Ti = initial absolute temperature
Vf = final volume
T f = final absolute temperature
It is extremely important to remember the temperatures are absolute temperaturesmeasured in Kelvin, NOT °C or °F.
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