Допишите уравнения химических реакций:
а)Fe2O3 +... -> Fe(NO3)3 + H2O
б)CuO+HCl -> ... + H2O
в)Mg + ... -> MgSO4 +...
г)H2CO3 + ... -> Na2CO3+H2O
д)KCLO3 -> KCl + O2
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