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How much energy is in one gallon of water?

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.
First answer by Knapp1. Last edit by Cyndicate. Contributor trust: 0 [recommend contributor recommended]. Question popularity: 6 [recommend question].

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