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## Empirical formulaIn chemistry, the ## Additional recommended knowledgeIn contrast, the molecular formula identifies a multiple of the smallest whole number ratio in moles. For example, n-hexane, a chemical compound has the molecular formula CH ## Use in physicsIn physics, an An example was the Rydberg formula to predict the wavelengths of hydrogen spectral lines. Proposed in 1888, it perfectly predicted the wavelengths of the Lyman series, but until Niels Bohr produced his Bohr model of the atom in 1913, nobody knew |

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Empirical_formula". A list of authors is available in Wikipedia. |