Un morceau de sucre de masse m=12,0 g contient N= 12,04x10 24 molécules de sac...
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Un morceau de sucre de masse m=12,0 g contient N= 12,04x1024 molécules de saccharose.
Calculer la quantité de matière n de saccharose dans ce morceau en mol.
Donnée: NA = 6,02x1023 mol-1
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