petitepharmacienne Posted January 1, 2020 Share Posted January 1, 2020 Bonjour! je bloque sur cet item qui est vrai mais j'arrive pas a comprendre pourquoi.. on mélange 1 L d'une solution de NaCl (M=58,5g) à 0,585g/L avec 1 litre d'une solution de CaCl2 (M=110g) à 0,550g/L et de glucose (M=180 g) à 0,9g/L. La solution obtenue: A. contient 0,005 Eq/ L de Na+ (VRAI) je trouve FAUX car: 0,585/ 58,5= 0,01 Quote Link to comment Share on other sites More sharing options...
Solution Edgar Posted January 1, 2020 Solution Share Posted January 1, 2020 Bonjour Attention on mélange un litre plus un autre litre donc cest a diviser par deux ;). Quote Link to comment Share on other sites More sharing options...
petitepharmacienne Posted January 1, 2020 Author Share Posted January 1, 2020 oh oui mince merci @Edgar Quote Link to comment Share on other sites More sharing options...
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