Answer
$\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{OH}$ produces the greatest mass of both $\mathrm{CO}_{2}$ and $\mathrm{H}_{2} \mathrm{O}$.
Work Step by Step
Every mole of $\mathrm{C}$ results in 1 mol $\mathrm{CO}_{2}$, and every 2 mol of $\mathrm{H}$ yields 1 mol of$\mathrm{H}_{2} \mathrm{O}$ . By using this analogy for the choices:
(a) 5 mol $\mathrm{CO}_{2}$ and 2 mol $\mathrm{H}_{2} \mathrm{O} ;$
(b) 1.25 mol $\mathrm{CO}_{2}$ and 2.5 mol $\mathrm{H}_{2} \mathrm{O} ;$
(c) 1 mol $\mathrm{CO}_{2}$ and 1.5 mol $\mathrm{H}_{2} \mathrm{O} $;
{d) 6 mol $\mathrm{CO}_{2}$ and 3mol $\mathrm{H}_{2} \mathrm{O}$.
