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The ionization energy for potassium is 419 kJ/mol. The electron affinity for bromine is -325 kJ/mol....

The ionization energy for potassium is 419 kJ/mol. The electron affinity for bromine is -325 kJ/mol. Use these values and Hess's law to calculate the change in enthalpy for the following reaction per mole of reagent:

K(g)+Br(g)→K+(g)+Br−(g),      ΔH=?

Express your answer with the appropriate units.

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