Réponse:
N=n×Na
n = 3,87×10^-1
Na = 6,02×10^23 mol-1
donc 3,87×10^-1×6,02×10^23 mol-1 = 2,32×10^23
Voilà!
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Réponse:
N=n×Na
n = 3,87×10^-1
Na = 6,02×10^23 mol-1
donc 3,87×10^-1×6,02×10^23 mol-1 = 2,32×10^23
Voilà!