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Initially 100 milligrams of a radioactive substance was present. After 6 hours the mass had decreased by 3%. If the rate of decay is proportional to the amount of the substance present at time t, what is the half life of the substance?

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  • Anonymous
    9 months ago

    Half life = 137 hr

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  • Anonymous
    9 months ago

    First of all, this is NOT a personal finance question.

    • Andy9 months agoReport

      My bad, I've never had to ask a question on here before. 

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