A compound contains nitrogen and oxygen only. The data for a sample of the compound are shown.
| Element | Mass in sample | Relative atomic mass |
|---|---|---|
| Nitrogen | 2.8 g | 14 |
| Oxygen | 6.4 g | 16 |
The relative molecular mass of the compound is 92.
Calculate the empirical formula of the compound.
Deduce the molecular formula of the compound.
142 exam-style questions on Edexcel GCSE Chemistry 2.6 Calculations involving masses, covering 2.6.1 Relative formula mass and percentage composition, 2.6.2 Empirical and molecular formulae, 2.6.3 Conservation of mass, 2.6.4 Reacting masses and concentration in g dm⁻³, 2.6.5 The mole and the Avogadro constant, and 2.6.6 Limiting reactants and stoichiometry. Each one has a worked solution and a mark scheme showing where the marks go.