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I once had a book about the ocean that claimed that there was 38 pounds of gold in one cubic mile of seawater. You could figure 1 cubic kilometer from here but you are still left with the validity of the claim of the book and even worse, my memory of that book. Still, something to play with.

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16y ago
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AnswerBot

4mo ago

Sea water weighs about 1,025 kilograms per cubic meter, which is equivalent to 1.025 million kilograms per cubic kilometer.

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12y ago

10000 metric tons.

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12y ago

8 tonnes

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Q: How much does sea water weigh per cubic kilometer?
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a cubic ton


How much does the sea weigh?

According to the US Geological Survey ... the oceans contain about 1,338,000,000 cubic kilometers of water. A cubic meterof water is 1000 kg, and a cubic kilometer has 1,000,000,000 of those, so the overall total mass is 1,338,000,000,000,000,000,000 kg, or 1.338 x 1021 kg.


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