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Physics

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--> La Mer Morte est une solution saturée, de concentration en sel (chlorure de sodium) égale à 275 g.L-1. L'Océan Atlantique a une concentration en sel moyenne de 35,0 g.L-1.
Quel volume d'eau de Mer Morte faut-il utiliser pour obtenir un bidon de 5,0 L de solution à 35,0 g.L-1 ?
Une bouteille de 1,5 L d'eau de l'Atlantique se renverse et se vide entièrement dans une cuve contenant 12 L d'eau. Comparer la concentration de la solution de la cuve à l'eau de l'Atlantique.
Quelle est la concentration de la solution obtenue en mélangeant un demi-litre d'eau de Mer Morte avec 2,5 L d'eau de l'Atlantique ?

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