Problem: The desorption (leaving of the surface) of a single molecular layer of n-butane from a single crystal of aluminum oxide was found to be first order with a rate constant of 0.128/s at 150 K.If the surface is initially completely covered with n-butane at 150 K, how long will it take for 50% to desorb (leave the surface)?

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The desorption (leaving of the surface) of a single molecular layer of n-butane from a single crystal of aluminum oxide was found to be first order with a rate constant of 0.128/s at 150 K.

If the surface is initially completely covered with n-butane at 150 K, how long will it take for 50% to desorb (leave the surface)?

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