Dinitrogen Pentoxide, N2O5, decomposes when heated to give in carbon tetrachloride solvent.   N2O5(g) →  2 NO2(g) + 1/2 O2(g) The reaction is first order. If the rate constant for the decomposition is 8.4x10-4/min what is the half-life, in hr, for the decomposition? Express your answer to one decimal place.

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