A sample of gas contains 0.1876 mol of H₂ and 0.1876 mol of O₂ and occupies a volume of 16.0 L. The following reaction takes place: H2​(g)+O₂(g)→H₂O₂​(g). Calculate the volume of the sample after the reaction takes place, assuming that the temperature and the pressure remain constant and the reaction goes to the completion.