Chemistry, 21.02.2022 02:50, amandasantiago2001

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: 1

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Calcium-49, a radioactive isotope, has a half-life of 9 minutes. If an 80-gram sample of the isotope...