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(a) The wavelength of a photon required to cause the dissociation of a molecule into its constituent atoms, is 270nm. Given the information below, calculate the corresponding bond dissociation energy of the molecule, in kJmol1. Relevant information: h=6.6261034Js;c=3108ms1; Avogadro's constant =6.0221023mol1 [6 marks] (b) Stratospheric Ozone plays a major role in shielding UV radiation from the Sun. A series of reactions in the stratospheric layer lead to both the production and destruction of ozone. (i) In 1930, Chapman proposed a chemical cycle to produce ozone. Write these chemical reactions. [3 marks] (ii) In 1960, further ozone destruction reactions involving NOx were proposed. Write these chemical reactions. [7 marks] (c) Change in temperature due to 'radiative forcing' can be represented simply by: T=4T3ln((ga)std(ga)) (i) Define each parameter in the given equation. [6 marks] (ii) Using the diagram shown in Figure Q5, what has the approximative change in the temperature been between 1960 and 2015 ? Relevant data: c02=5.35Wm2;=5.6697108Wm2K4 [3 marks] [Total 25 marks]