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ce cantitate de S se gaseste in 450g Al2S3

Răspuns :

180g Al2S3 sper ca te.am ajutat
MAl2S3=2×AAl+3×AS=2×27+3×32=150g
150gAl2S3.......54gAl......96gS
450gAl2S3......................xgS
x=450×96/150
x=288gS