Avogadro's constant

British  

noun

1.  L.   NA.  the number of atoms or molecules in a mole of a substance, equal to 6.022 52 × 10 ²³

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Example Sentences

The change also means that the constants on which the new definitions rely — the charge of the electron for the ampere, Avogadro’s constant for the mole, Boltzmann’s constant for the kelvin and Planck’s constant for the kilogram — are from today fixed values with zero uncertainty.

From Nature

Crucially, Avogadro’s constant and the Planck constant are intertwined in the laws of physics.

From New York Times

Having measured Avogadro’s constant, Dr. Bettin could derive the Planck constant.

From New York Times

One way to calculate Planck’s constant involves determining Avogadro’s constant, the number of particles in a given amount of a substance.

From Scientific American

This allows them to calculate a value for Avogadro’s constant, which the researchers convert into a value for Planck’s constant.

From Nature