mass fraction, \(w\)

https://doi.org/10.1351/goldbook.M03722
Mass of a @C01281@ divided by the total mass of all constituents in the mixture.
Sources:
Green Book, 2nd ed., p. 41 [Terms] [Book]
PAC, 1996, 68, 957. (Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996)) on page 980 [Terms] [Paper]