<sod>where ''V''<sub>100</sub> is the volume occupied by a given sample of gas at 100&nbsp;°C; ''V''<sub>0</sub> is the volume occupied by the same sample of gas at 0&nbsp;°C; and ''k'' is a constant which is the same for all gases at constant pressure. This equation does not contain the temperature and so has nothing to do with what became known as Charles' Law. Gay-Lussac's value for “k” ({{frac|2.6666}}), was identical to Dalton's earlier value for vapours and remarkably close to the present-day value of {{frac|2.7315}}. Gay-Lussac gave credit for this equation to unpublished statements by his fellow Republican citizen J. Charles in 1787.  In the absence of a firm record, the gas law relating volume to temperature cannot be named after Charles.<eod>
<sod>where ''V''<sub>100</sub> is the volume occupied by a given sample of gas at 100°C; ''V''<sub>0</sub> is the volume occupied by the same sample of gas at 0°C; and ''k'' is a constant which is the same for all gases at constant pressure. This equation does not contain the temperature and so has nothing to do with what became known as Charles' Law. Gay-Lussac's value for “k” ({{frac|2.6666}}), was identical to Dalton's earlier value for vapours and remarkably close to the present-day value of {{frac|2.7315}}. Gay-Lussac gave credit for this equation to unpublished statements by his fellow Republican citizen J. Charles in 1787.  In the absence of a firm record, the gas law relating volume to temperature cannot be named after Charles.<eod>