Avogadro constant

{
  "id": "MLC-T-CHM-001029",
  "term": "Avogadro constant",
  "field": "Chemistry",
  "definition": "The number of constituent particles, such as atoms or molecules, per mole of a substance. It provides a fundamental link between the macroscopic world of measurable quantities and the microscopic world of atoms and molecules. Its value is exactly 6.022 140 76 × 10^23 mol^-1.",
  "subject": "Physical and Biophysical Chemistry",
  "see_also": [
    "amount of substance",
    "number of entities"
  ],
  "references": [
    "BIPM, Le Système international d’unités (SI), SI Brochure, 9e ed. (2019), p. 17 (https://www.bipm.org/fr/publications/si-brochure/)",
    "BIPM, The International System of Units, SI Brochure, 9th ed. (2019), p. 129 (https://www.bipm.org/en/publications/si-brochure/)",
    "Green Book, 3rd ed., p. 129 (https://doi.org/10.1039/9781847557889)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/avogadro-constant/"
}