Correction du DS 2 de seconde
EXERCICE 1.2 L'eau de mer contient du sel, à raison de 30 g de sel dans 1000 g d'eau. 1 Indiquer si l'eau de mer est un corps pur ou un mélange. Justifier. 2 ...
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moved 104672
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moved 101168
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moved 89810
moved 24389

