Ответ:
2H2+O2=2H2O
4Cu+O2=2Cu2O
Al+Cl2=AlCl2
2Be+Cl2=2BeCl
4Al+3O2=2Al2O3
2Na+Cl2=2NaCl
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Ответ:
2H2+O2=2H2O
4Cu+O2=2Cu2O
Al+Cl2=AlCl2
2Be+Cl2=2BeCl
4Al+3O2=2Al2O3
2Na+Cl2=2NaCl