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Chemistry, 08.11.2020 23:50 kkeith121p6ujlt

Le trimix est un mélange de gaz utilisé pour la plongée. • À partir des masses de chaque gaz contenu dans la bou teille, calculer le pourcentage en volume de chaque gaz dans le trimix.

Données

Pour une bouteille de 12 kg:

• masse de dioxygène : 3,3 kg;

• masse d'hélium : 600 g; • masse de diazote : 8,1 kg.

Masse volumique du gaz à pression atmosphérique:

. p(0.) =

1,33 g L-;

• p(N2) = 1,17 g L-'; .

• (He) = 0,17 g L

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