Распределите вещества по классам, и назовите их
ВаО, К2О, Н2SO4, HNO2, P2O5, Fe(OH)2, CuSO4, Na2CO3, AL2(SO4)3, H2SO3, HNO3, Zn(OH)2, Cu(OH)2, Ba(NO2)2, H2O, Li2S, HF, Fel3, H2SiO3, SO2
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