Identify the oxidizing agent in the following redox reaction CH4 + 2O2 \rightarrow CO2 +2H2O Balance each of the following oxidation-reduction reactions. a. CO(s) + Br2(l) -> CoBr_3(s) b.Al(s) + H_2SO_4(aq) -> AL_2(SO_4)_3(aq) + H_2(g) c. Na(s)...