A fifth is a common term for 750 ml of hard liquor, approximately 1/5 of a gallon.
About .75
Five of them.
a fifth of liquor is 750 mL, or 20 ounces. A real fifth though, is actually 755 mL. I am not sure why liquor uses 750 mL other than my theory of the possibility of 20 ounces being so common in The States.
0.79 quarts
A "fifth" is equal to one fifth of a gallon. Therefore, five fifths would be equal to one gallon. A "fifth" is now sold in 750 ml (where ml means milliliter) containers (although still called a "fifth") and 750 ml can be written as 0.75 L (where "L" means Liter) which is the same as 3/4 of a Liter. Therefore, five 750 ml (0.75 L) containers would be equal to 3.75 L. An equation for this could look like: One Fifth of Liquor ~ 750 ml = 0.75 L = 3/4 L, therefore, 5 x One Fifth of Liquor ~ 5 x 750 ml = 5 x 0.75 L = 5 x 3/4 L, therefore, One Gallon ~ 3,750 ml = 3.75 L = 3 & 3/4 L or more simply, 5 Fifths of Liquor is considered equal to 3 Liters & one Fifth... or a gallon if they sell your brand that way.
0.750 mL = about 0.025 fluid ounces.
Champagne is about 13% alcohol. A bottle is typically 750 mL, meaning 97.5 mL of that is pure alcohol. A shot of liquor is 44.36 mL, though a shot of whiskey, tequila, or vodka is typically only 40% pure alcohol. This means a shot is only 17.74 mL of pure alcohol. Thus a bottle of champagne is the equivalent of 5.5 shots of liquor. Since a fifth of liquor holds about 17 shots, a bottle of champagne is equivalent to a third of a fifth of liquor.
1000 ml = 1 liter
50 Ml
Close but a little off. You can round it to 17 shots in a fifth. A standard shot is indeed 1.5 ounces, and a fifth is 750 millileters. There are 44.36 mL in each 1.5 oz shot. doing the math, there are 16.907 1.5oz shots in a fifth. Not off by much really, but the extra mil and a half would be nice :) "a fifth holds 17.066667 shots 1 shot = 1.5 ounces It depends on the definitions. A fifth of a gallon is 25.6 oz, 725.76 mL. A shot is technically an ounce, but shot glasses are generally an ounce and a half, technically a jigger. Sometime around 1980, liquor switched to 750 ml bottles which would be 17.6 jiggers. The glasses aren't filled to the brim, and there is some spillage. Most bars figure 18 shots to the bottle."
750 ml