Mole
Leaving Cert Chemistry · The Nature of Matter
Higher Level
The SI unit of amount of substance, containing 6.022 x 10^23 particles, which is about the number of atoms in 12 g of carbon-12. The mass of one mole of a substance in grams is numerically equal to its relative atomic or relative molecular mass.
Ordinary Level
An amount of substance that contains 6.022 x 10^23 particles. Its mass in grams is the same number as the relative molecular mass.
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