### Alcohol by volume

Alcohol by volume (abbreviated as ABV abv or alc/vol) is a standard measure of how much alcohol is contained in a given volume of an alcoholic beverage (expressed as a volume percent) It is defined as the number of millilitres of pure ethanol present in 100 millilitres of solution at 20C The number of millilitres of pure ethanol is the mass of the ethanol divided by its density at 20C

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