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The US Mint website says that the mass of a new, clean penny is 2.5 grams.

I won't go through all the unit conversion here, and I'll just blurt out the answer.

(Just because I have to do all that work, why should you suffer ! ?)

If each penny is 2.5 grams, then you need 2,541 of them to make 14 pounds.

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12y ago

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