Добрати коефіцієнти в схемах реакцій:
_Са+_О2 -_ СаО
_К+_Сl2 - _KCl _
_H2O - _H2+_O2 |
_Fe+_HCl - _FeCl2+_H2 |
_HgO - _Hg+_O2 |
_Cu+_O2 - _CuO
_Al+_HCl - _AlCl3+_H2 |
_Na+_Cl2 - _NaCl
Даю 10 балів
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