How much of a radioactive substance must be presented to decay to 40 grams in 9 years if the half-life of the substance is 4.6 years?

Question

How much of a radioactive substance must be presented to decay to 40 grams in 9 years if the half-life of the substance is 4.6 years?

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Isabelle 1 week 2021-09-15T06:58:21+00:00 1 Answer 0

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    2021-09-15T06:59:47+00:00

    Answer:

    155.25 grams

    Step-by-step explanation:

    40 = X(½^(9/4.6))

    X = 40 ÷ (½^(9/4.6))

    X = 155.25 grams

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45:7+7-4:2-5:5*4+35:2 =? ( )