а) 4Al+3O2=2Al2O3
Б)2HgO=2Hg+O2
в)Zn+2HCl=ZnCl2+H2
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а) 4Al+3O2=2Al2O3
Б)2HgO=2Hg+O2
в)Zn+2HCl=ZnCl2+H2