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Photochemical dissociation of oxygen res...

Photochemical dissociation of oxygen results in the production of two oxygen atoms,one in the ground state and one in the excited state. `O_2oversethnurarrO+O^*`. The maximum wavelength needed for this is 174nm. if the excitation energy `OrarrO^*` is `3.15xx10^-19J, How much energy in kJ/mole is needed for the dissociation of one mole of oxygen into normal atoms in ground state?

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