$20.0\,\mathrm{cm}^3$ of hydrogen peroxide breaks down into water and oxygen in the presence of a suitable catalyst. After $5.00$ minutes, $160\,\mathrm{cm}^3$ of oxygen, measured at room conditions, has been formed. What is the average rate of decomposition of hydrogen peroxide over this reaction period?
- A$2.22 \times 10^{-5}\,\mathrm{mol\,s}^{-1}$
- B$4.44 \times 10^{-5}\,\mathrm{mol\,s}^{-1}$
- C$1.76 \times 10^{-4}\,\mathrm{mol\,s}^{-1}$
- D$2.67 \times 10^{-3}\,\mathrm{mol\,s}^{-1}$