Розставте коефіцієнти у схемах:
K + O₂ = K₂O ;
KClO₃= KCl + O₂ ;
Li + H₂O = LiOH + H₂;
Fe₂O₃+ HCl = FeCl₃+ H₂O ;
FeCl₂ + Cl₂ = FeCl₃ ;
CH₄ + O₂ = CO₂ + H₂O.
помогите пж даю 20 балов​
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