3. Acid rain can by formed by the production of nitric acid when nitrogen dioxide is introduced into the
atmosphere:

NO₂ (g) + N₂ (g) + 2 O₂ (g) + H₂O(g) → 2 HNO3(aq) + NO (g)

If a car engine uses 500. g of nitrogen dioxide gas in the presence of 20. L of oxygen gas at STP, given an
excess of nitrogen gas and water vapor, what mass of nitric acid will be produced?