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La combustion complète de 2,3 g d'un liquide organise A formé de carbone, d'hydrogène et d'oxygène donne 4,4 g de dioxyde de carbone et 2,70 g d'eau. Le volume d'une mole de ce liquide est 58,2 mL. La masse volumique du liquide pur est 790 kg/m³.

1) Calculer la masse molaire du composé.

2) Déterminer les masses de carbone, d'hydrogène et d'oxygène contenues dans le composé.

3)Déterminer la formule brute massique du liquide A Calculer la composition centésimale massique du liquide A.​


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