| 单词 | avogadro's constant |
| 释义 | > as lemmasAvogadro's constant Avogadro's constant n. (also Avogadro constant) (originally) a physical constant expressing the number of molecules, atoms, etc., in a mole (mole n.8) of substance; (in later use, equivalently) the quantity 6.02214076 × 1023 mol−1; symbol NA.In 2018 the General Conference on Weights and Measures agreed that, as part of the redefinition of the mole (mole n.8), the value of Avogadro's constant would from May the following year be set at exactly 6.02214076 × 1023 mol−1, having previously been given as 6.022140 758(62) × 1023 mol−1 (where the figure in parenthesis represents the standard uncertainty due to errors in measurement).extracted from Avogadron.< as lemmas |
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