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La masse d’un atome est de 1,05•

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User Bofjas
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Answer:La masse d'un atome de cuivre est de 1,05 x 10^-25 kg. Un atome de cuivre comporte 29 électrons. Ces electrons constituent le nuage electronique de l'atome. chaque electron a une masse de 9,11 x 10^-311.

Explanation:

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User Alex Meuer
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