Chapter 8, Problem 101IAE

Ozone, O₂, absorbs ultraviolet radiation and dissociates into O₂ molecules and O atoms: $O_2+hv\to {\text{O}}_{\text{2}}\text{+O}\text{. A 1}\text{.00 L}$ sample of air at 22 (C and 748 mmHg contains 0.25 ppm of Oz. How much energy, in joules, must be absorbed if all the O₂ molecules in the sample of air are to dissociate? Assume that each photon absorbed causes one O₂ molecule to dissociate, and that the wavelength of the radiation is 254 nm.