1. The problem statement, all variables and given/known data 1. Do the molecules "seek" specific spots on the surface? 2. The main challange in making ammonia is getting over the reaction barrier for N and H. 3. As the temperature rises the mobility of the molecules on the surface increases. 4. The catalytic converter in cars lowers the barrier for the reaction CO -> C + O Thanks! 2. Relevant equations none 3. The attempt at a solution I'm not sure about my answers. Keep in mind the answers are super-general and are true\false statements, and there's no need to go into much depth. I couldn't find any source for most of these so this is why I'm asking for guidance here. Thanks! 1. From what I understood - yes. They go to spots where they are not bonded to strong to the surface but also not too weak to it. 2. I think this statement is false. the main barrier is breaking the N2 bond and not getting N and H to react. 3. I think this is correct, doesn't need much explanation. 4. This one I'm unsure - is it correct or does the converter lowers the barrier for breaking the O2 ?