Données : Masses molaires atomiques (en g/mol) pour H: 1;C: 12;N: 14; 0:16; Na : 23 ;
S:32;K: 39,1 ; Ca : 40 ; Cu : 63,5 ;
Vous pouvez également vous aider de la classification périodique des éléments.
Exercice 1
Un engrais contient du nitrate d'ammonium de formule NH. NO..
1) Calculer la masse molaire de ce composé ionique.
M= 2x+4 + 14 x 1 + 3x16=800
2) Un sac d'engrais contient 150 g de nitrate d'ammonium. Calculer la quantité de matière
de ce composé ionique contenu dans ce sac.​

answer:

bonjour!

explanation:

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