Answer : 0.5 moles of oxygen are completely consumed in the production of 1.00 mole of 
Solution : Given,
Moles of
= 1 mole
The given balanced reaction is,

From this balanced reaction, we conclude that
As, 2 moles of
produces from 1 moles of 
So, 1 mole of
produces from
moles of 
Therefore, 0.5 moles of oxygen are completely consumed in the production of 1.00 mole of 