Convert 437 grams of Fe2(CO3)3 to atoms of carbon.

Which of the following would have less momentum than a 52 kg cheetah running at 10 m/s?

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?

How many valence electrons are in atom of radon?