Student claimed that “one mole of ammonium sulfate has the same number of particles and the same mass as one mole of lead." Explain why the student's statement is false (1 point).

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?