C-06-Q056mediumsingle_mcqH2+O2→H2O\mathrm{H_2} + \mathrm{O_2} \to \mathrm{H_2O}H2+O2→H2O সমতা করলে—aH2+O2=H2O\mathrm{H_2} + \mathrm{O_2} = \mathrm{H_2O}H2+O2=H