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==Key Stage 5==
===Meaning===
The [[Avogadro Constant]] is the number of atoms in 12 grams of carbon-12, approximately '''6.02x10<mathsup>6.02 \times 10^{23}</mathsup> ''' atoms per [[mole]].
===About the Avogadro Constant===
*The [[Avogadro Constant|Avogadro constant]] is used to calculate the number of [[particle]]s in a given amount of substance.
*One [[mole]] of any substance contains [[Avogadro Constant|Avogadro]]'s number of particles.
*The value of the [[Avogadro Constant|Avogadro constant]] is '''6.02214076 x 10^02x10<sup>23 </sup>''' mol^<sup>-1</sup>.
*It is used in determining the [[Molar Mass|molar mass]] of substances.
*The [[Avogadro Constant|Avogadro constant]] is essential for converting between [[atom]]ic scale and macroscopic scale measurements.
*The [[Avogadro Constant|Avogadro constant]] is named after the Italian scientist [[Amedeo Avogadro]], who first proposed the concept.