Calculate the equilibrium constant for the production of Mgo when the equilibrium concentrations are 0.01 M for Mg. 0.01 for 07, and 2M for Mgo.

2Mg + 02 <-->2Mgo

a. 4 x 10^-6
b. 2 x 10^4
c. 2 x 10^6
d. 4 x 10^6

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?