666dollarfootlong@lemmy.world to

No Stupid Questions@lemmy.world · 11 months ago

Why is alcohol measured in percentages?

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Why is alcohol measured in percentages?

666dollarfootlong@lemmy.world to

No Stupid Questions@lemmy.world · 11 months ago

I feel like it would be useful to know exactly how much alcohol is in a can or a bottle. Also why is alcohol the only thing measured in percentages and not sugar or caffeine or medicine?

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11 months ago
Since krellor answered the main question:

I feel like it would be useful to know exactly how much alcohol is in a can or a bottle.

By volume: multiply ABV by the volume of the drink.

By weight: do the maths above, and then multiply the result by 0.789 g/ml.

RL example: the beer in my fridge is 350ml, 4.7% ABV. Doing the maths this is roughly 16.5ml of alcohol, or 13.0g.

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