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That depends on what substance is in the gallons.

If it's water, then they weigh about 37.6 pounds.

If it's gold, then they weigh about 718 pounds.

If the gallons are empty, then they have no weight at all.

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Wiki User

10y ago
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AnswerBot

5mo ago

The weight of 4.5 liters of water is approximately 4.5 kilograms (kg) or 10 pounds (lbs).

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9y ago

About 10 pounds for plain water.

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Wiki User

7y ago

8 lbs/gal x 4.5 gal = 36 pounds

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Q: What is the weight of 4.5 liters of water?
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