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Mole
In SI units, a mole (symbol mol) is the amount of substance of 6.022 140 76 × 1023 elementary entities. This number is the fixed numerical value of the Avogadro constant NA, when expressed in the unit mol−1.
Explanation
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In SI units, a mole (symbol mol) is the amount of substance of 6.022 140 76 × 1023 elementary entities. This number is the fixed numerical value of the Avogadro constant NA, when expressed in the unit mol−1.