Depends on how you use it..
According to Einsteins equation E=mc^2 (energy = mass * the speed of light squared), 1 gallon of water is equal to 326 petajoules.
The world consumes 15 terawatts (54 petajoules / hour). -HowStuffWorks.com
1 Gallon of water = Enough energy to satisfy the world's energy needs for ~6 hours.
How much energy is in one gallon of gas, compare this to quantity of energy in one gallon of rocket fuel, voila, your answer!!!
Depends on how you use it.. According to Einsteins equation E=mc^2 (energy = mass * the speed of light squared), 1 gallon of water is equal to 326 petajoules. The world consumes 15 terawatts (54 petajoules / hour). -HowStuffWorks.com 1 Gallon of water = Enough energy to satisfy the world's energy needs for ~6 hours.
About 8.35 pounds for one US gallon of water.
At 17oC one gallon of water weighs 4.536kg.
1 gallon of fresh water is about 8.36 pounds
one tenth of a gallon
One gallon of water weighs about 8.35 pounds (about 3.8 kilograms).
1/2 gallon ideally
One gallon of water
1 quart of water is 1/4 as much as 1 gallon of water.
One US gallon = 114,000 to 115,000 Btu = 121MJ depending on type.
== Probably close to the weight of water. 8.34 lbs per gallon.