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4Na+O2=2Na2O;
2Na+2H2O=2NaOH+H2;
Na2O+H2O=2NaOH.
2. Na₂O+ H₂O--> 2NaOH
3. 2Na+ 2H₂O--> 2NaOH+ H₂
mam nadzieję, że pomogłam ;)