A gas mixture containing $2\text{ g}$ of hydrogen and $32\text{ g}$ of oxygen has a volume, $V$, when measured at r.t.p. The gases are allowed to react until no further change occurs. $2\text{H}_2\text{(g)} + \text{O}_2\text{(g)} \rightarrow 2\text{H}_2\text{O(l)}$. State which reactant remains in excess and determine the final volume of the mixture at r.t.p.?
Chemistry 5070 · O Level · The mole and the Avogadro constant