Al2S3 + O2 => 
напишите краткое ионное и полное ионное

state the problem briefly but clearly             describe the problem in detail  give examples of causes and effects of poverty in russia  offer some possible solutions but be realistic       find a clear and convincing conclusion to your speech    edit the text to see whether you can improve it    CРОЧНО РЕБЯТ!СОЧИНЕНИЕ

К оксидам не относятся вещества:

1) СО и СаО

2)NO2 и SO2

3)ВаО2 и КО2

4)Cr2O3 и ZnO