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

By: USER2454
28 Agustus 2025 physics 5 minutes
4.5
178 views 178 comments 7 shares

Question

Grade: Education Subject: physics
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
Asked by:
178 Viewed 178 Answers

Answer (178)

Best Answer
(218)
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)
Answered on 28 Agustus 2025
(102)

Answer:

5.0

Explanation:

just took the test

Answered on 28 Agustus 2025

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