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A light sensitive substance in black-and-white photographic film is AgBr. Photons provide the energy necessary to transfer an electron from Br- to Ag+ to produce elemental Ag and Br and thereby darken the film. A) If the minimum energy of 2.00 x 10^5 J/mol is needed for this process, what is the minimum energy needed for each proton? B) Calculate the wavelength of light necessary to provide photons of this energy? C) Explain why this film can be handled in a darkroom under red light.

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Category:- Chemistry
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