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An early means of testing the proof of alcohol was to wet gunpowder with the whiskey. If it burned, whiskey was at least 100 proof (50% alcohol) If it failed to burn, it was lesser proof.
Proof. Which is basically 2x the percent of volume that is alcohol. I believe it was called proof because in the past bar keeps would water down whisky and only patrons could ask for "proof" by attempting to burn the alcohol. if it didn't burn it had been watered down. and alcohol burns at roughly 80 plus proof, which is the ideal proof for hard alcohol such as whiskey, vodka, rum, and so on...
nyquil+cheap vodka=green danger
60 percent alcohol = 120 proof. one percent = two proof. Since this question involves 'proof' which is typically used to measure alcohol in distilled liquor, I need to point out some safety warnings. At 120 proof, this is not something to drink 'straight'. That level and the even higher level of alcohol in 'Everclear' (190 proof) can actually 'burn' your skin by leaching water out of the skin cells. It is also flammable, some liquors of this level are used to 'flambe' food dishes.
Nope. How do you tell how much alcohol a liquid contains? You can measure its density, but in the wild west you knew when they'd been watering back the whiskey because if you mixed it with gunpowder it wouldn't light. If you mix it with gunpowder and can get the gunpowder to burn you know its at least 50% alcohol by volume. This became know as 100 proof. 30% abv = 60 proof and so on.
Alcohol is sold with a number called "alcohol by volume" or ABV. In America, most beer is 3.4%ABV. To figure out the proof, simply double the ABV number. Vodka is generally 40%ABV, so in the United States it would be 80 proof. Other countries may have other standards that alter the proof number.
Soldiers that didn't want to accept watered rum would wet their powder with newly delivered rum and see if it would burn (explode). If there was sufficient alcohol then the rum was 100 degree "proof".Half of that alcohol content corresponds 50 proof (50%), and so on, though there are some differences in how the US and the EU make measurements.I don't know about the soldiers testing their rum,but 100 Proof whiskey is 50% alcohol by weight, 50 proof would be only 1/4 alcohol.
Because it contains alcohol. Are you stupid ?
The liver metabolizes about 1/3 ounce of pure ethyl alcohol per hour.
You can not get vodka in the UK that has a high enough percentage to be remotely flammable. Try it for yourself You hare better off using something like Absinthe that is 70% that is more likely to light.
no From BlergK: This answer is partially correct. Most cognac, or hard liquor in general, is not above 80 proof, which is 40% alcohol. What determines whether a drink will burn is what it is made of, not what it's called. Cognac could burn if it has a high enough alcohol percentage. Most 80 proof liquors do not burn, but most 100 proof do, meaning somewhere in there, around 90 proof, is the point where it could be flammable. A good example is bourbon or gin, some are only 40% alcohol, but Maker's Mark and Bombay Sapphire are both around 45 to 47%...they tend to burn.
12.7 oz of 80 proof vodka translates to 12.7 oz * 2/5 = 5.1 oz * 0.79 = 4.0 oz * 28.35 = 113.4 g alcohol at 7g per hour = 16 hours and 15 minutes. Approximately, of course, and it may be different for males and for females. So don't rely on being sober the next day!