The beautiful journey of chemical education, where everything makes perfect sense until it suddenly doesn't. Simple diatomic oxygen formation? Easy. Carbon dioxide? Child's play. But then stoichiometry throws a curveball with nitrogen and hydrogen making ammonia, and suddenly you're questioning your life choices.
That third equation is where chemistry stops being addition and starts being a sadistic puzzle. N₂ + H₂ = NH₃? Where did that extra hydrogen come from? The balanced equation should be N₂ + 3H₂ = 2NH₃, which is precisely when most students transition from "I understand chemistry" to "I will become an English major."