Use the balanced chemical equation to complete the table: $(9.1,9.2)$
$$
2 \mathrm{C}_{2} \mathrm{H}_{6}(g)+7 \mathrm{O}_{2}(g) \stackrel{\Delta}{\longrightarrow} 4 \mathrm{CO}_{2}(g)+6 \mathrm{H}_{2} \mathrm{O}(g)
$$
\begin{array}{|r|l|l|l|}
\hline \mathrm{C}_{2} \mathrm{H}_{6} & \mathrm{O}_{2} & \mathrm{CO}_{2} & \mathrm{H}_{2} \mathrm{O} \\
\hline \mathrm{mol} & -\mathrm{mol} & 3.2 \mathrm{~mol} & \mathrm{~mol} \\
\cline { 2 - 4 } \mathrm{mol} & 2.8 \mathrm{~mol} & -\mathrm{mol} & \mathrm{mol} \\
\hline
\end{array}