This question had been asked and i didnt have time to answer... The answer can be found with this link. http://www.onlineconversion.com/waterweight.htm
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800cc of what? It all depends on the substance in which is is 800cc.
The average water heater will have about 400 pounds of water in it.
How many degrees water weights 7975 pounds
about 8.355 pounds
30
5 pounds
15,820 gallons of water weighs 132,097 pounds.
705 gallons of water weighs about 5,883.2 pounds.
About 25 pounds for three US gallons of water.
1 gallon of water weighs 8.2 pounds, so 32.8 pounds
Well the human body is approxiametly 62%water so about 90 pounds of water