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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?

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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4 votes
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?

asked
User Henley N
by
8.8k points

1 Answer

6 votes

Answer:

18 grams.

Explanation:

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

answered
User Harry Lakins
by
8.2k points
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