How much of a radioactive kind of rhodium will be left after 120 seconds if the half-life is 30 seconds and you start with 480 grams?​

Question

How much of a radioactive kind of rhodium will be left after 120 seconds if the half-life is 30 seconds and you start with 480 grams?​

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Lệ Thu 6 months 2021-08-31T10:38:26+00:00 1 Answers 7 views 0

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    2021-08-31T10:40:01+00:00

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    Answer:

      30 grams

    Step-by-step explanation:

    The time 120 seconds is 4 times the half-life of 30 seconds. That means (1/2)^4 = 1/16 of the original amount will remain. That is (480 g)(1/16) = 30 g.

      30 g of the radioactive rhodium will be left

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