A power station burns 500 tonnes of coal. The coal contains 1.6% sulfur by mass. All of the sulfur is converted into sulfur dioxide.
S+O2→SO2\mathrm{S + O_{2} \rightarrow SO_{2}}S+O2→SO2
(relative atomic masses: O = 16, S = 32)
What mass of sulfur dioxide is formed?
4 tonnes
8 tonnes
12 tonnes
16 tonnes
130 exam-style questions on Edexcel GCSE Chemistry 9.1 Fuels, covering 9.1.1 Hydrocarbons and crude oil, 9.1.2 Fractional distillation of crude oil and its fractions, 9.1.3 The alkanes as a homologous series, 9.1.4 Complete and incomplete combustion, 9.1.5 Pollutants from burning fuels, 9.1.6 Hydrogen as a fuel and non-renewable fossil fuels, and 9.1.7 Cracking of larger alkanes. Each one has a worked solution and a mark scheme showing where the marks go.