Final answer:
The correct equation that models the relationship between the number of molecules of nitric oxide and water is 4n = 6w.
Step-by-step explanation:
The balanced chemical equation for the Ostwald Process is:
4NH3(g) + 5O2(g) -> 4NO(g) + 6H2O(g)
In this equation, 4 molecules of ammonia react with 5 molecules of oxygen to produce 4 molecules of nitric oxide and 6 molecules of water.
Therefore, the correct equation that models the relationship between the number of molecules of nitric oxide, n, and the number of molecules of water, w, is 4n = 6w.