расставьте коэффициенты в уравнениях реакций и укажите тип каждой реакции:
1)C+O -> CO2; 2) CaCO3 -> CaO + CO2;
3) Zn+HCl -> ZnCl2 + H2 ;
4)CO+O2 -> CO2; 5)Mg+Fe2 O3 -> Fe + MgO
6) P+O2 ->P2 O5; 7)NaOH+H2 SO4 -> Na2 SO4 + H2O
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