It depends on the size of the mass: a swimming pool will have a greater mass and hold more gallons than a kitchen sink.
Gallons can't be converted to grams. Gallons measure volume, while grams measure mass.
400 pounds of plain water is about 48 gallons.
2.5 million liters of water is equal to about 549,923.121 UK gallons or 660,430.131 US gallons.
mass = density x volume mass = 1g/cm^3 x 22,024,419cm^3 ans = 22.024419tonnes
20 gallons of water has a mass of about 167 pounds.
About 240 gallons. The short US ton has 907,1847 kg; the density of water is 1 g/cm3. So the short ton is equal to 907,1847 L. The US gallon has 3,785 411 784 L, so 1 ton is equal (as mass) to 239,65 US gallons of water.
The great lakes
a cloud
For fresh water at room temperature, it is 25 grams
It is impossible to know for it changes every second. With tributaries (rivers) and the water shed, humans, and fish mass. There is no likely guess.
it is because of all of the salt that makes salt water have a higer mass than salt water
That converts to 4000 pounds which is the same as 2 tons. 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.