What are the half-equations of manganese and oxygen in the following redox reaction?
The half-equations should look like this:

$$\ce{2Mn^2+(aq) \to 2Mn^4+(aq) + 4e^-}$$

and

$$\ce{4OH^-(aq) + O2(aq) + 4e^- -&gt; 4O- + 2H2O(l)}$$