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How much of a radioactive kind of technetium will be left after 28 minutes if the half-life is 14 minutes and you start with 72 grams?
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How much of a radioactive kind of technetium will be left after 28 minutes if the half-life is 14 minutes and you start with 72 grams?

User Henley N
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1 Answer

6 votes

Answer:

18 grams.

Explanation:

28/14 = 2 so we divide 72 by 2 twice

User Harry Lakins
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