A hydrogen fuel cell produces water at a rate of 9.0 g per minute. It is supplied from a cylinder containing 1200 dm3\mathrm{dm^{3}}dm3 of hydrogen, measured at room temperature and pressure.
2H2+O2→2H2O\mathrm{2H_{2} + O_{2} \rightarrow 2H_{2}O}2H2+O2→2H2O
Relative atomic masses: H = 1, O = 16. One mole of any gas occupies 24 dm3\mathrm{dm^{3}}dm3 at room temperature and pressure.
For how long can the cell run before the hydrogen is used up?
50 minutes
100 minutes
133 minutes
200 minutes
42 exam-style questions on Edexcel GCSE Chemistry 6.4 Chemical cells and fuel cells, covering 6.4.1 Chemical cells and fuel cells. Each one has a worked solution and a mark scheme showing where the marks go.