A) sulfuric acid + sodium hydroxide → sodium sulfate + water
I think you means the KO2 reacts with H2O. The equation of this reaction is 4KO2+2H2O->4KOH +3O2. The ratio of mole number of O2 and KO2 is 3:4. So the mole number of O2 produced is 0.500/4*3=0.375 mol.
False... The number of electrons in the outer shell of the atom of the element determines it's reactivity. <span />
Answer:
punctuation, and if it makes sense
