Difference between revisions of "Avogadro constant"
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| − | The '''Avogadro constant''' (symbol: '''''L''''' or '''''N''<sub>A</sub>''') is a [[physical constant]] that relates measurements made at the macroscopic scale to those made on an atomic scale. It is usually defined as the number of entities (such as atoms or molecules) in one [[mole (unit)|mole]], and the 2006 [[CODATA recommended value]] is 6. | + | The '''Avogadro constant''' (symbol: '''''L''''' or '''''N''<sub>A</sub>''') is a [[physical constant]] that relates measurements made at the macroscopic scale to those made on an atomic scale. It is usually defined as the number of entities (such as atoms or molecules) in one [[mole (unit)|mole]], and the 2006 [[CODATA recommended value]] is {{nowrap|6.022 141 79(30){{e|23}} mol<sup>−1</sup>}}. It was orginally called '''Avogadro's number''', and is named in honour of the Italian physicist [[Amadeo Avogadro]]. |
==Notes and references== | ==Notes and references== | ||
Revision as of 05:55, 18 August 2010
The Avogadro constant (symbol: L or NA) is a physical constant that relates measurements made at the macroscopic scale to those made on an atomic scale. It is usually defined as the number of entities (such as atoms or molecules) in one mole, and the 2006 CODATA recommended value is 6.022 141 79(30) × 1023 mol−1. It was orginally called Avogadro's number, and is named in honour of the Italian physicist Amadeo Avogadro.
Notes and references
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See also the corresponding article on Wikipedia. |
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