What are the concentrations of hydroxide and hydronium ions in a solution with a pH of 10.2? (4 points) 1.4 x 10−4 M H3O+ and 7.1 x 10−11 M OH−

3.8 x 10−6 M H3O+ and 2.6 x 10−9 M OH−

8.3 x 10−9 M H3O+ and 1.2 x 10−6 M OH−

6.3 x 10−11 M H3O+ and 1.6 x 10−4 M OH−

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?