阿伏加德羅常數

物理化學裡面,阿伏加德羅常數(符號:NA)係一個常數,等於(6.02214129±0.00000027)×1023 mol-1[1][2][3]。佢個名來自意大利化學家阿美迪奧·阿伏伽德羅。阿伏加德羅常數嘅具體定義係:當以 mol-1為單位時,佢嘅數值等於 12 克-12裡面所含嘅碳原子個數。阿伏加德羅常數通常用於代表一摩爾物質所含嘅基本單元(如分子或原子)嘅數量,係聯繫一種粒子嘅摩爾質量同絕對質量嘅比例常數[1][4][5]

睇埋

參考

  1. 1.0 1.1 Mohr, Peter J. (2008). "CODATA Recommended Values of the Fundamental Physical Constants: 2006" (PDF). Rev. Mod. Phys. 80: 633–730. Bibcode:2008RvMP...80..633M. doi:10.1103/RevModPhys.80.633. Unknown parameter |coauthors= ignored (|author= suggested) (help)
  2. International Union of Pure and Applied Chemistry Commission on Atomic Weights and Isotopic Abundances, P.; Peiser, H. S. (1992), "Atomic Weight: The Name, Its History, Definition and Units" (PDF), Pure and Applied Chemistry, 64 (10): 1535–43, doi:10.1351/pac199264101535, 喺2006-12-28搵到. Text "Pure Appl. Chem. " ignored (help)
  3. International Union of Pure and Applied Chemistry Commission on Quantities and Units in Clinical Chemistry, H. P. (1996), "Glossary of Terms in Quantities and Units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996)" (PDF), Pure and Applied Chemistry, 68 (4): 957–1000, doi:10.1351/pac199668040957, 喺2006-12-28搵到. Text "Pure Appl. Chem. " ignored (help); Unknown parameter |coauthors= ignored (|author= suggested) (help)
  4. Avogadro constant
  5. 國際度量衡局 (2006), The International System of Units (SI) (PDF) (第8th版), pp. 114–15, ISBN 92-822-2213-6