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manonfichot
@manonfichot
December 2020
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Bonsoir, j’ai du mal à cet exercice...
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claclara76
Réponse :
non elle est pas un mélange homogène car il y a beaucoup plus de cuivre que des autres matières.
cuivre = 89%, aluminum = 5%, zinc = 5%, étain =1%
a) cuivre = 6.94, aluminum = 0.39, zinc = 0.39 et étain = 0.08 b) on peut conclure que la piece de 50 c est plus lourde.
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Réponse :
Explications :