Well, at least he didn't ask whether a pound of lead or a pound of feathers is heavier.
Um, this is a joke, right? A pound of anything, from feathers to stones, weighs a pound. In case it's a...
The density of water is 1kg per litre. a gallon is 5 litres so it weighs 5kg A gallon of regular water weighs about 8 pounds 1 US gallon= 3.785 l Density of water= 1 kg/l density= mass/volume 1 kg/l...