A mole is the amount of a substance that contains as many particles as the number of atoms in 12 grams of what isotope?

1 answer:

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The SI unit for amount of substance is the mole. It has the unit symbol mol. The proportionality constant is the inverse of the Avogadro constant. The mole is defined as the amount of substance that contains an equal number of elementary entities as there are atoms in 12g of the isotope carbon-12.

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