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molality · SI / chemistry · Modern standardized
molality
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- M585
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Definition
Molality is amount of solute divided by mass of solvent, expressed in mol/kg.
History & use
NIST recommends the term molality and mol/kg rather than the older 'molal' notation.
Modern use
Modern use is context-dependent and varies by region or measurement system.
Sources & evidence
Source tier — · confidence high
- Bureau International des Poids et Mesures — https://www.bipm.org/en/publications/si-brochure
- IUPAC, Quantities, Units and Symbols in Physical Chemistry — https://iupac.org/what-we-do/books/greenbook/
- International Union of Pure and Applied Chemistry — https://goldbook.iupac.org/terms/view/M03970.html
- Consultative Committee for Amount of Substance (CCQM) / Bureau International des Poids et Mesures — https://www.bipm.org/documents/20126/41489679/SI-App2-mole.pdf