Empirical-formula meaning

A chemical formula that indicates the relative proportions of the elements in a molecule rather than the actual number of atoms of the elements.
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A chemical formula which gives the composition of elements in a molecule in their lowest relative proportions but does not specify the structural arrangement or true molecular weight (Ex.: CH for benzene or acetylene)
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A chemical formula that indicates the relative proportions of the elements in a molecule rather than the actual number of atoms of the elements. The empirical formula of a compound may be simpler than its molecular formula, which is a multiple of the empirical formula. For example, glucose has the molecular formula C6 H12 O6 but the empirical formula CH2 O.
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(chemistry) A notation indicating the ratios of the various elements present in a compound, without regard to the actual numbers.

The molecular formula for ethane is C2H6, while the empirical formula is CH3.

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