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|Born||9 August 1776
|Died||9 July 1856
|Institutions||University of Turin|
|Known for||Avogadro's law
Amedeo Avogadro (9 August 1776, Turin, Piedmont – 9 July 1856) was an Italian scientist. He is most famous for his contributions to molecular theory. The number of elementary entities (atoms, molecules, ions or other particles) in 1 mole of a substance, 6.02214179(30)×1023, is known as the Avogadro constant.