Percent Mass per Mass

**Semantic type:** Quantitative Concept

**Definition:** A unit of percentage concentration expressed as a fraction of a solute by mass in the entire mass of a resulting solution. The concept also refers to the weight-weight percentage concentration given that standard values for specific gravity of the solute and the solution are used.

**Synonyms:** - % (W/W) - %(w/w) - %M/M - %{WeightToWeight} - %{w/w} - %{w/w} - Mass Percentage - PERCENT WEIGHT/WEIGHT - Percent Weight per Weight - Percent Weight per Weight - Percent Weight/Weight - Percent by Mass - Percent by Weight - Weight Percent - Weight-Weight Percentage - g/100 g - m/m% - percent weight/weight - percent weight/weight - w/w%