If water weighs 8.34 pounds per gallon how much does blood weigh per gallon?

If you happen to have that much blood on hand... we should call the police.

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The blood density is 1,06 g/cm3.

So, if your gallon is an US gallon of 3,785 411 784 L the weight of blood is 4 012 kg or 8,846 lb.