Chapter 9.4, Problem 24PP

For each of the following reactions, 20.0 g of each reactant is present initially. Determine the limiting reactant, and calculate the grams of product in parentheses that would be produced.
$\begin{array}{l}a.\text{ 4}A1\left(s\right)\text{+ }3O_2\left(g\right)\to 2A{1}_2{O}_3\left(s\right)\left(A{1}_2{O}_3\right)\hfill \\ b.{\text{ 3NO}}_{\text{2}}\left(g\right)+H_{2}O\left(I\right)\to \text{ 2H}N{O}_3\left(aq\right)+\text{ N}O\left(g\right)\left(HN{O}_3\right)\hfill \\ c.C_2{H}_{6}O\left(l\right)+3O_2\left(g\right)\stackrel{\Delta }{\to }\text{ 2}C{O}_2\left(g\right)+{\text{ 3H}}_{\text{2}}O\left(g\right)\left(H_{2}O\right)\hfill \end{array}$