If 1 pint is 1 pound, then 2 gallons is 16 pounds.
400 pounds of plain water is about 48 gallons.
One pound of steam condenses back to one pound of liquid water. Since one gallon of water weighs 8.337 pounds, simply divide the weight of the condensate by 8.337 to find out how many gallons of condensate you have.
800 pounds of water would be 95.8 US gallons.
For plain water about 41.7 pounds at 8.345lbs per gallon.
15,820 gallons of water weighs 132,097 pounds.
About 25 pounds for three US gallons of water.
That would depend on what they are gallons of. Different liquids have different weights. Water with nothing mixed into it weighs a bit over 8 gallons per pound.
There are a couple of problems with your question. First, "condensation" is simply water that has been changed from a vapor to a liquid, so unless you have something else in mind, your question seems to be, "How many gallons of water are there in a pound of water?" The second problem is that because there are about 8.34 pounds to a gallon of water, there are no "gallons" in a pound of water, only fractions of gallons. So, a better way to phrase your question might be, "What fraction of a gallon would a pound of water constitute?" To get the answer to that, you would simply divide one gallon by the number of pounds in a gallon (8.34) to determine that a pound of water is .12 of a gallon. Hope that helps. If that isn't what you were after, ask another question.
20 gallons of water weighs 167 pounds.
42 gallons of water is 350.7 pounds
Pounds can't be converted to gallons. Pounds measure mass, while gallons measure volume.
22,000 pounds of water is 2,634 (2,634.73054) US gallons.