Number-average molar mass

{
  "id": "MLC-T-CHM-008161",
  "term": "Number-average molar mass",
  "field": "Chemistry",
  "definition": "A statistical average of the molar masses of all individual polymer molecules in a sample, weighted by the number of molecules at each molar mass. It is calculated by summing the products of the number of moles and molar mass for each species, then dividing by the total number of moles. This value is sensitive to the presence of low molar mass species.",
  "subject": "Polymer",
  "see_also": [
    "molar-mass average"
  ],
  "references": [
    "PAC, 2015, 87, 71. 'Definitions of terms relating to individual macromolecules, macromolecular assemblies, polymer solutions, and amorphous bulk polymers (IUPAC Recommendations 2014)' on page 83 (https://doi.org/10.1515/pac-2013-0201)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/number-average-molar-mass/"
}