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Avogadro's number
noun
, Chemistry.
- the constant, 6.022 × 10 23 , representing the number of atoms, molecules, or ions in one mole of a substance. : N Compare gram-atom, gram molecule.
Avogadro's number
- The number of atoms or molecules in a mole of a substance, approximately 6.0225 × 10 23. It is based on the number of carbon atoms in 12 grams of carbon 12.
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Word History and Origins
Origin of Avogadro's number1
First recorded in 1925–30; Avogadro's law
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