Chapter 8.2, Problem 8.7QAP

Balance each of the following chemical equations: a. $N_2\left(g\right)+O_2\left(g\right)\to NO\left(g\right)$

1. $HgO\left(s\right)\underset{\to }{\Delta }Hg\left(l\right)+O_2\left(g\right)$
2. $Fe\left(s\right)+O_2\left(g\right)\to F{e}_2{O}_3\left(s\right)$
3. $Na\left(s\right)+C{l}_2\left(g\right)\to NaCl\left(s\right)$
4. $C{u}_{2}O\left(s\right)+O_2\left(g\right)\to CuO\left(s\right)$