Chapter 8.1, Problem 1PP

State the number of atoms of oxygen in the reactants and in the products for each of the following equations:

$\begin{array}{l}a.3N{O}_2\left(g\right)+H_{2}O\left(I\right)\to NO\left(g\right)+2HN{O}_3\left(aq\right)\hfill \\ b.5C\left(s\right)+2S{O}_2\left(g\right)\to C{S}_2\left(g\right)+4CO\left(g\right)\hfill \\ c.2C_2{H}_2\left(g\right)+5O_2\left(g\right)\stackrel{\Delta }{\to }4C{O}_2\left(g\right)+2H_{2}O\left(g\right)\hfill \\ d.N_2{H}_2\left(g\right)+2H_2{O}_2\left(g\right)\to N_2\left(g\right)+4H_{2}O\left(g\right)\hfill \end{array}$