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1 January, 03:45

The isotope Cesium-137, which has a half-life of 30 years, is a product of nuclear power plants. How long will it take for this isotope to decay to about one-sixteenth its original amount?

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  1. 1 January, 03:57
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    The answer to your question is 120 years

    Explanation:

    Data

    half-life = 30 years

    decay of 1/16

    Process

    1. Do a chart to solve this problem

    Every 30 years the amount of Cesium is half the previous amount.

    Amount of Cesium-137 Time (years)

    x 0

    x/2 30

    x/2/2 = x/4 30

    x/4/2 = x/8 30

    x/8/2 = x/16 30

    Total time = 30 + 30 + 30 + 30 or 4 x 30 = 120 years
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