A sample contains 10 g of a radioactive isotope. How much radioactive isotope will remain in the sample after 1 half-life? a.5.0 b. 2.5 c. 7.5 d.10

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asked Jul 21, 2019 103k views

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Daniele Pallastrelli · Answer 1 · 2019-07-26T19:15:19+0000

After one half-life, 50% of the sample has decayed and
is no longer radioactive.

50% of the original 10 g is 5 g.

After one half-life, 5 g has decayed, and 5 g remains. (a)

A sample contains 10 g of a radioactive isotope. How much radioactive isotope will remain in the sample after 1 half-life? a.5.0 b. 2.5 c. 7.5 d.10

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