Ребят,помогите пожалуйста.
→ FeCl3 → Fe(OH)3 → Fe2O3 → Fe → FeCl2 → Fe(OH)2 → FeO → Fe;

Na → Na2O2 → Na2O → NaOH → Na2CO3 → NaHCO3 → NaNO3 → NaNО2;

Si → SiO2 → Na2SiO3 → H2SiO3 → SiO2 → Si → Mg2Si → SiH4.
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