Number content

{
  "id": "MLC-T-CHM-013352",
  "term": "Number content",
  "field": "Chemistry",
  "definition": "A quantity giving how many specified elementary entities of a component are present per unit mass of the system, for example molecules per kilogram of sample. Because it is referred to mass, it differs from the number concentration, which is referred to volume. Its coherent SI unit is the reciprocal kilogram, kg^-1.",
  "subject": "Chemistry and Human Health",
  "references": [
    "PAC, 1996, 68, 957. 'Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996)' on page 984 (https://doi.org/10.1351/pac199668040957)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/number-content/"
}