# What numerical value represents 1.00 mol of any substance?

Jan 11, 2017

$6.022 \times {10}^{23}$ individual items of that substance.
$\text{Avogadro's constant} ,$ often given the symbol ${N}_{A}$ or less commonly $L$, has the value $6.022140857 \left(74\right) \times {10}^{23} \cdot m o {l}^{-} 1$.
$\text{Avogadro's number}$ of ""^1H atoms have a mass of $1.00 \cdot g$. And thus it is the link between the micro world of atoms and molecules, and the benchtop world of grams, and kilograms, and litres.