ErinTest

Regular Parentheses Numbering

\[\ce{Cu2S_{(s)} + \frac{5}{2}O2_{(g)} + 2H+_{(aq)} = 2Cu^{2+}_{(aq)} + SO4^{2-}_{(aq)} + H2O_{(l)}} \tag{44}\]

Alternative Parentheses Numbering

\[\ce{ZnS_{s} + 2O2_{g} = ZnSO4_{aq}} \tag*{$[22]$}\]
\[\ce{ZnS_{s} + 2O2_{g} = ZnSO4_{aq}} \tag*{$/22/$}\]