## Number of Avogadro

**What is the Avogadro’â„¢s number?**

**6.022 141 79(30)Ã‚ Ãƒâ€”Ã‚ 10 ^{23}.**

Avogadro’â„¢s number, also known as the Avogadro constant, is equivalent to 6.022?141?79(30)Ã‚ Ãƒâ€”Ã‚ 10^{23} mol^{-1}. It is used in chemistry and physics as a calculation of the number of atoms or molecules in one mole of any substance. Specifically, Avogadro’â„¢s number is the exact number of atoms in 12 grams of carbon-12.

This fact is verified on : February 25, 2010.