May/June 2026 Paper 13

2026 · 40 questions · 40 parts · 40 marks

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25Empirical Molecular FormulaeMedium1 mark
The skeletal structure of hexamine is shown.
Skeletal structure of hexamine drawn as a cage: four nitrogen atoms (each labelled N) - one at the top, two side by side in the middle row, and one at the bottom - joined to each other by six unlabelled two-carbon ($-CH_{2}-CH_{2}-$) zigzag bridges, forming the tricyclic adamantane-like cage of hexamethylenetetramine; no other atoms or labels are shown.
What is the empirical formula of hexamine?