Editing Gas laws (section)

=== Statement ===
Charles' law states that:
{{Block indent|quote=The volume of a given fixed mass of a dry gas is directly proportional to its absolute temperature at a constant pressure.}}
Therefore,

* <math>V \propto T\,</math>, or
* <math>{V \over T} = k_2</math>, or
:<math display="block">{V_1 \over T_1} = {V_2 \over T_2}</math>,


where ''"V"'' is the volume of a gas, ''"T"'' is the absolute temperature and ''k''<sub>2</sub> is a proportionality constant (which is not the same as the proportionality constants in the other equations in this article).