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ていすう 定数
Noun
1. Avogadro's constant; Avogadro's numberChemistry, Physics
Wikipedia definition
2. Avogadro constantIn chemistry and physics, the Avogadro constant is defined as the ratio of the number of constituent particles N in a sample to the amount of substance n through the relationship NA = N/n. Thus, it is the proportionality factor that relates the molar mass of an entity, i.e. , the mass per amount of substance, to the mass of said entity. The Avogadro constant expresses the number of elementary entities per mole of substance and it has the value 6.02214129(27)×10 mol.
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