Pleural effusion. A pleural effusion is excess fluid that accumulates in the pleural cavity, the fluid-filled space that surrounds the lungs. This excess can impair breathing by limiting the expansion of the lungs.
There are 1.5 ounces in a shot. There are 64 ounces in a half gallon. So there are 42.6666667 shots in a half gallon or about 42 1/2 shots in a half gallon. You can find this out by going to Google and typing: shots in half gallon or the long way by typing: ounces in shot and ounces in half gallon
Since a shot is typically a spirit with 40 percent alcohol, this makes the shot 1.5 oz. or 42.62 mL (though many establishments serve a standard drink of 1 oz). A double shot in North America may be either 2.5 or 3 fluid ounces.