May/June 2026 Paper 12

2026 · 40 questions · 40 parts · 40 marks

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2Empirical Molecular FormulaeMedium1 mark
Compound Q contains the elements C, H and O only. When completely combusted, 2.00 g of Q produces 4.00 g of carbon dioxide and 1.63 g of water. What is the empirical formula of Q?