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March 30, 2017

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a reaction is first order and it takes 324 minutes for the reaction to be 50% complete. How long will it take for the reaction to be 85% complete at the same temperature?

  • chemistry - ,

    ln(No/N) = kt
    ln(100/50) = k*324.
    Solve for k, then substitute back into
    ln(100/15) = k*t and solve for t.

  • chemistry - ,

    it says the answer is 887 minutes. am i doing something wrong . when i use that formula i don't get 887

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