Constante de Avogadro - Wikipedia, la enciclopedia libre
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An Exact Value for Avogadro's Number Untangling this constant from Le Gran K could provide a new definition of the gram Ronald Fox, Theodore Hill Avogadro's number, N A , is the fundamental physical constant that links the macroscopic physical world of objects that we can see and feel with the submicroscopic, invisible world of atoms. In theory, N A specifies the exact number of atoms in a palm-sized specimen of a physical element such as carbon or silicon.
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Lorenzo Romano Amedeo Carlo Avogradro, Count of Quarengna and Cerreto (1776-1856). [6.0221x10^23]