The balanced chemical equation for the reaction between oxygen (O2) and nitrogen dioxide (NO2) is:
2NO2 + O2 → 2NO3
From this equation, we can see that for every one mole of O2 that reacts, two moles of NO2 are produced. Therefore, we can set up the following proportion to find the number of moles of O2 that must react to form 4.67 moles of NO2:
1 mole of O2 / 2 moles of NO2 = x moles of O2 / 4.67 moles of NO2
Solving for x, we get:
x = (1 mole of O2 / 2 moles of NO2) x 4.67 moles of NO2
x = 2.335 moles of O2
Therefore, 2.335 moles of O2 must react to form 4.67 moles of NO2.