An estimate would be 48 pounds. Pounds is a unit of mass/weight. Gallons is a liquid measure. They do not convert cleanly. The density of the liquid being measured can make a big difference. If the liquid is water, there is 8 pounds to a gallon.
Six pounds of plain water is 0.72 gallon; about 3/4 gallon.
One gallon of gasoline weighs 5 to 6 pounds depending on temperature. 2,000 pounds divided by 6 pounds per gallon gives 333 gallons.
50 gallons of plain water weighs about 417 pounds.
42 gallons of water is 350.7 pounds
If Imperial gallons, about 62 pounds. If USG, about 47 pounds.
10 US gallons is approximately 83.5 pounds
30 pounds of water is 3.593 gallons.
About 250.5 pounds for 30 US gallons.
10 gallons of water is 83.5 pounds
800 pounds of water would be 95.8 US gallons.
That depends on what substance you have 227.5 pounds of.227.5 pounds of air fills many, many gallons.227.5 pounds of water fills about 27.2 gallons.227.5 pounds of granite fills only a few gallons.
4o pounds
20 gallons of water weighs 167 pounds.