Chapter 5, Problem 46E

The reactions do not occur in aqueous solutions. Balance their equations by the half-equation method, as suggested in Are You Wondering 5-2.
a. ${\text{CH}}_4\left(\text{g}\right){\text{+NH}}_3\left(\text{g}\right){\text{+O}}_{\text{2}}\left(\text{g}\right)\to \text{ HCN}\left(\text{g}\right){\text{+ H}}_{\text{2}}\text{O}\left(\text{g}\right)$
b. $\text{NO}\left(\text{g}\right){\text{+ H}}_{\text{2}}\left(\text{g}\right)\to {\text{NH}}_3\left(\text{g}\right){\text{ + H}}_{\text{2}}\text{O}\left(\text{g}\right)$
c. $\text{Fe}\left(\text{s}\right){\text{+H}}_{\text{2}}\text{O}\left(\text{I}\right){\text{+O}}_{\text{2}}\left(\text{g}\right)\to \text{Fe}{\left(\text{OH}\right)}_3\left(\text{s}\right)$