Respuesta :

scme1702
The reaction equation:
2H₂O + 2Na₂O₂ → 4NaOH + O₂

Moles of sodium peroxide = 10 / 78 = 0.128

Moles of oxygen released = 0.128 / 2 = 0.064 mol
Mass of oxygen = 0.064 x 32

Mass of oxygen = 2.05 grams