Automobile catalytic converters use a platinum catalyst to reduce air pollution by changing emissions such as carbon monoxide, CO(g), into carbon dioxide, CO2(g). The uncatalyzed reaction is represented by the balanced equation below. 2CO(g) + O2(g) 2CO2(g) + heat . Compare the activation energy of the catalyzed reaction to the activation energy of the uncatalyzed reaction.

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Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?

Identify the lewis base in this balanced equation: fe3+ h2o fe(h2o)63+