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At 17oC one gallon of water weighs 4.536kg.
One gallon of water weighs about 8.35 pounds (about 3.8 kilograms).
== Probably close to the weight of water. 8.34 lbs per gallon.
1 gallon of fresh water is about 8.36 pounds
2 liters
about 4kg
About 8.35 pounds.
One gallon of seawater weighs about 8.53 pounds or 3.87kg
4,54609188 kilograms There are 4,54609188 litres in an imperial gallon, one litre of water weighs 1 kilogram.
One gallon of fresh water weighs 8.36 pounds (8 pounds 5.76 ounces)
A little less than one gallon of water which is (depending on the temp of the water) 8.34 lbs.
One gallon of water is 8.345404 Lbs.So a 100 gallon tank would have 834.5404 lbs of water.