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QCM 22 ITEM D EB6

par camelialegeay » 03 Avr 2022, 20:12

Salut ! Je comprend pas pq l'item : "pour croître les cristaux d'émail ont besoin d'un milieu légèrement acide"
Dans le cours, on dit que la MMP20 a besoin d'un ph légèrement acide, mais qu'ensuite il faut le neutraliser pour qu'ils puissent grandir en largeur et en épaisseur.

Merci :wink2:

camelialegeay: Apprenti Carabin; Messages: 160; Inscription: 31 Juil 2021, 13:12

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Re: QCM 22 ITEM D EB6

par Patafelix » 05 Avr 2022, 14:40

+1 je suis d'accord, l'item est ambigu, j'aurais trouvé ça plus juste un item du genre "Il faut neutraliser le pH pour permettre la croissance des cristaux" parce que c'est la dernière étape avant la croissance.

merci pour tout

edit: il y avait la réponse dans le reste des questions désolé, l'item est bien faux :coeur:

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