August 2021 0 7 Report
1) CaCO3 - CaO - CaCl2 - Ca(NO3)2 2) Al2O3->AlCl3->Al(OH)3->Al2O3 3) Zn->ZnCl2->Zn(OH)2->ZnSO4 Решите пожалуйста цепочки превращений (очень важна правильность(решается оценка))            
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