Aluminium sulfate, Al2(SO4)3\text{Al}_2(\text{SO}_4)_3Al2(SO4)3, is widely used in municipal water treatment plants to coagulate suspended impurities.
Calculate the relative formula mass of aluminium sulfate.
(Relative atomic masses: O=16\text{O} = 16O=16, Al=27\text{Al} = 27Al=27, S=32\text{S} = 32S=32)
258 exam-style questions on Edexcel GCSE Chemistry Calculations involving masses. Each one has a worked solution and a mark scheme showing where the marks go.