Molar gas volume

Hydrogen peroxide decomposes according to the equation:

$2\text{H}_2\text{O}_2 \rightarrow 2\text{H}_2\text{O} + \text{O}_2$.

If 48.0 g of $\text{H}_2\text{O}_2$ (Mr = 34) decomposes completely at room temperature and pressure, what volume of $\text{O}_2$ is produced? (Molar gas volume = 24 dm$^3$/mol.)