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M Na₂O = 62g/mol
xmoli 100g
4Na + O₂ -> 2Na₂O
4mole 2* 62g
x moli Na - 100g Na₂O
4mole Na - 124g Na₂O
x = 3,22mola Na
ODP. Należy utlenić 3,22 mola sodu.
Pozdrawiam,
matteushq;)