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9 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 too tiny to count individually
Relative atomic mass (Ar) or relative formula mass (Mr)
12 grams
18 grams
2×1+16=182 \times 1 + 16 = 182×1+16=18
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