Chemistry, 20.02.2022 19:30 spencertodd742
Calcium-49, a radioactive isotope, has a half-life of 9 minutes. If an 80-gram sample of the isotope decays for 27 minutes, how many grams of the original sample remain?
Select one:
a. 60
b. 10
c. 40
d. 20
Answers: 2
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Calcium-49, a radioactive isotope, has a half-life of 9 minutes. If an 80-gram sample of the isotope...
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