The air reaches the tiny air sacs (alveoli) in the inner part of the lungs with any dust particles that avoided the defenses in the nose and airways. The air sacs are very important because through them, the body receives oxygen and releases carbon dioxide.
1 A full size keg holds about 15.5 gallons (165 12-oz cups) and is sometimes referred to as a 1/2 keg. 2  The full-size kegs typically start at about $100 for American draft beers. 3  Specialty beers, lagers and ales can cost from $125-$250.
One Keg. Each 15.5-gallon keg (Â½ Barrel) contains 1984 ounces of beer. Realistically, you could expect to get at least 130-140 16 oz pints (if a 16oz pint is served with a Â¾ inch head it has approx 14oz in the glass) from that keg. If a pint of beer was sold for $3.00, this would generate a gross profit of $390-$420.