It depends what is in that gallon bucket. If its full of platinum it'll be a mite heavier then if it was full of pure vacuum.
Its a confused question. Weight is how hard earth's gravity sucks on something. In outer space there is no weight.
Mass is how much of stuff is in something - its measured by how much force it takes to accelerate it. In outer space mass remains an important factor in doing anything.
And gallons are antique imperial units for volume. The weight or mass of a gallon of something can vary widely depending on the density of the material. From helium to uranium the density of stuff varies a lot.
Chat with our AI personalities
You're comparing a mass to a volume. A gallon of water can can weigh a certain amount, but a gallon of a more dense fluid can weigh more.
1 gallon = 4 quarts 1 quart = 0.25 gallon
Tar weighs approximately 7.5 pounds per gallon.
50000 KG
The gram already is a unit of mass.