Current
Electric current
the amount of water
gallons
gallons
Gallons is a measure of volume. Square feet is a measure of area. It's sort of like asking how many diet cokes are in a sheet of paper.
Liters or gallons, depending if your in Canada or US
You would measure the water in a bath tub in gallons.
the amount of water
Gallons
Gallons can't be converted to grams. Gallons measure volume, while grams measure mass.
gallons
you can measure it in liters or gallons
256 pounds of plain water is about 31 gallons.
You cannot convert a measure of area (square feet) to a measure of volume (gallons). Gallons is a measure of volume, or of 3 dimensions. You'd need cubic feet (not square feet) to convert it to gallons.
gallons
it takes 800 gallons of water to make 1 megawatt-hour of electricity (1000 kWh).
meter
gallons of what? a gallon is a measure of volume, and a kilogram is a measure of weight. a gallon of frying oil