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8 cards from this deck
Unit to count particles like atoms or molecules
6.02×10236.02 \times 10^{23}6.02×1023
Avogadro's number
Amedeo Avogadro
Atoms/molecules are too tiny to count individually
Relative atomic mass (ArA_rAr) or relative formula mass (MrM_rMr)
12 grams (ArA_rAr = 12)
18 grams (MrM_rMr = 18)
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