Step 1 of the Ostwald process for nitric acid production is4NH₃(g) + 5O₂(g) | Pt/Rh catalyst → 4NO(g) + 6H₂O(g) An unwanted side reaction for this step is
4NH₃(g) + 3O₂(g) → 2N₂(g) + 6H₂O(g)(d) Because of the high price of Pt, a filtering unit composed of ceramic fiber is often installed, which recovers as much as 75% of the lost Pt. What is the value of the Pt captured by a recovery unit with 72% efficiency?