A different hydrocarbon has a relative formula mass of 58. It has an empirical formula of C2H5\text{C}_2\text{H}_5C2H5. Deduce the molecular formula of this hydrocarbon. You must show your working.
(Relative atomic masses: H=1\text{H} = 1H=1, C=12\text{C} = 12C=12)
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.