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Chemistry, 20.09.2020 07:01 kyrabrown33

1- Lire les documents, repérer les éléments en relation avec le problème posé. 2- Reformuler le problème en utilisant un vocabulaire scientifique. 3- Vérifier à partir de mesures que le flacon présenté contient bien du glycérol. ( 4- Élaborer un protocole expérimental pour préparer 100 mL de solution hydro alcoolique en utilisant uniquement une fiole jaugée et une balance. Vous ferez bien apparaître votre démarche et les calculs réalisés.

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