# What is the mass of water and carbon dioxide that can be produced from 15. moles of octane?

Feb 13, 2017

${C}_{8} {H}_{18} \left(l\right) + \frac{25}{2} {O}_{2} \left(g\right) \rightarrow 8 C {O}_{2} \left(g\right) + 9 {H}_{2} O \left(l\right)$,
which I think is stoichiometrically balanced. If $15$ $m o l$ of octane were completely combusted, we would get $120 \cdot m o l$ of carbon dioxide, and $135 \cdot m o l$ of water......
These (ii) represent masses of $120 \cdot m o l \times 44.01 \cdot g \cdot m o {l}^{-} 1 = 5.28 \cdot k g$ $\text{carbon dioxide}$, and $135 \cdot m o l \times 18.01 \cdot g \cdot m o {l}^{-} 1 = 2.43 \cdot k g$ of $\text{water}$.