\textbf{215.} If aluminum reacts with each of the oxygen and fluorine gases, giving $3.01 \times 10^{24}$ electrons, what is the ratio of the mass of aluminum fluoride produced to the mass of aluminum oxide produced?
$(O = 16,\ F = 19,\ Al = 27 : \text{g.mol}^{-1})$
(1) $1/\!56$ \quad (2) $1/\!65$ \quad (3) $2/\!35$ \quad (4) $3/\!25$