Chapter 8.2, Problem 7PP

Balance each of the following chemical equations:

$\begin{array}{l}\begin{array}{l}a.N_2\left(g\right)+{\text{ O}}_2\left(g\right)\to NO\left(g\right)\hfill \\ b.HgO\left(s\right) \stackrel{\Delta }{\to }Hg\left(1\right)+O_2\left(g\right)\hfill \end{array}\\ \begin{array}{l}c.Fe\left(s\right)+{\text{ O}}_2\left(g\right)\to F{e}_2{O}_3\left(s\right)\hfill \\ d.Na\left(s\right)+C{1}_2\left(g\right)\to NaCl\left(s\right)\hfill \\ e.C{u}_{2}O\left(s\right)+O_2\left(g\right)\to CuO\left(s\right)\hfill \end{array}\end{array}$