April 2019 0 23 Report
Napisz słownie podane reakcje 2KMnO₄ --> K₂MnO₄ + MnO₂ + O₂

2Na + 2H₂O --> 2NaOH + H₂

CaCO₃ --> CaO + CO₂
MEGA PILNE DAJE NAJ


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