# mass fraction

> ratio of one substance's mass to the mass of the total mixture

**Wikidata**: [Q899138](https://www.wikidata.org/wiki/Q899138)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Mass_fraction_(chemistry))  
**Source**: https://4ort.xyz/entity/mass-fraction


## References

1. ISO 80000-1:2009 Quantities and units—Part 1: General
2. Freebase Data Dumps. 2013
3. ISO 80000-9:2019 Quantities and units — Part 9: Physical chemistry and molecular physics
4. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)