Avogadro's Number Definition

The number of items in a mole, approximately 6.0221 × 1023 .
American Heritage

(chemistry, physics) The number of atoms present in 12 grams of isotopically pure carbon-12, being 6.0221415 x 1023. By definition, the number of elementary entities (atoms or molecules) comprising one mole of a given substance.


Origin of Avogadro's Number

  • Named after Amadeo Avogadro (1776 - 1856)

    From Wiktionary

  • After Amedeo Avogadro

    From American Heritage Dictionary of the English Language, 5th Edition

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