The abundance of ozone is typically inferred from measurements of UV absorption and is

Chapter 14, Problem 14.26

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The abundance of ozone is typically inferred from measurements of UV absorption and is often expressed in terms of Dobson units (DU): \(1 \mathrm{DU}\) is equivalent to a layer of pure ozone \(10^{-3} \mathrm{~cm}\) thick at \(1 \mathrm{~atm}\) and \(0^{\circ} \mathrm{C}\). Compute the absorbance of UV radiation at \(300 \mathrm{~nm}\) expected for an ozone abundance of \(300 \mathrm{DU}\) (a typical value) and \(100 \mathrm{DU}\) (a value reached during seasonal Antarctic ozone depletions) given a molar absorption coefficient of \(476 \mathrm{dm}^3 \mathrm{~mol}^{-1} \mathrm{~cm}^{-1}\).