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The International Bureau of Weights and Measures (BIPM) in France has custody of the International Prototype Kilogram, which is kept in a secure vault. Copies of the kilogram, known as national prototypes, are held by national metrology institutes such as NIST in the United States.

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1y ago

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Which is heavier a kilogram of sand or a kilogram of marbles?

A kilogram is a kilogram, no matter what.


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The abbreviation of Kilogram is 'kg'.


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Heck, one killogram, I bro you, is a kilogram, dummy.


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