1.Розставте коефіцієнти у хімічних рівняннях

а)Cu + O2 = CuO; г)C2H2 + H2 = C2H6;

б) Al + I2 = AlI3; ґ)Cl2 + O2 = Cl2O7;

в) C + H2 = СН4; д)Li2O + H2O = LiOH.

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