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The Answer:
According to the Science and Technology DeskReference,the weight of a gallon of commonfuel (such asgasoline) is six pounds. Agallon of water, onthe other hand, weighs about 8.4pounds.
Considering this, what does unleaded fuel weigh?
Usually, regular unleaded gasoline has agravityof around 58 and a weight per gallon of 6.216 poundspergallon.
Secondly, what does 5 gallons of gas weigh?
So, 5.8 gallons of gasoline willweighsomewhere between 33.82 lbs to 37.68 lbs (depending ongrade andtemperature).
Water is heavier than gasolineandwill fall out to the bottom. The gasoline phase is thetopphase which is lighter than water.