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By definition 12 grams of carbon-12 must contain how many atoms?
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By definition 12 grams of carbon-12 must contain how many atoms?

User Jason Roell
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It is defined as the amount of a substance that contains as many particles as there are atoms in 12 grams of pure carbon-12. So, 1 molecule contains 6.022×10^23 elementary entities of the substance.

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User Sport
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