Please help and give steps :)! thank you How much mL of 32% formic acid (ρ = 1.0746 g / mL) is required to prepare 300 mL of a 5% solution (ρ = 1.0102 g / mL)?

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?