Chemistry / Chem 0258 · Atom · ~20 seconds
Empirical Formula
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An empirical formula reports atom counts reduced to lowest terms, so any factor shared across the molecular subscripts is divided out.
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Benzene's molecular formula, C6H6, reduces to the empirical formula CH once the shared factor of six is divided out of both subscripts.
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An empirical formula and a molecular formula can look identical while describing very different-sized molecules that share one ratio.