why does water weigh so much ?

Hayabusa Rider

Admin Emeritus & Elite Member
Jan 26, 2000
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Because hydrogen bonding causes water to be liquid at room temperature, and liquids weigh more than gasses per unit volume.
 

silverpig

Lifer
Jul 29, 2001
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Guess: Water is a polar molecule (it has a + side and a - side). While the molecules are electrically neutral on the whole, their polarity can make it seem like they are charged to the other nearby molecules and there is an attraction. Attraction = molecules are closer together = take up less space = higher density = weigh more.
 

veloc1ty

Banned
Dec 1, 2004
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Gallons into Pounds: Multiply the specific gravity of the liquid by 8.33* (weight in pounds of 1 gallon of water); then multiply this result by the number of gallons, to obtain the weight in pounds.