As we have discussed, real surfaces often have steps and defects. Bearing this in mind, consider the following. A surface scientist runs an experiment where they expose a clean $Pt(111)$ surface to $NO$ at $100K$ and at room temperature. At $100K,$ they observe only molecular adsorption, while at room temperature, they observe a mixture of atomic $N$ and $O,$ and molecular NO$.$ How can you explain these results? Also, how would you expect these results to change if hey used a Pt$(755)$ surface instead? $(30$ points$)$