Multiple Choice
Carbon-11 is a radioactive isotope of carbon. Its half-life is 20.3 minutes. What fraction of the initial number of carbon-11 atoms in a sample will remain after 81 minutes
A) 1/16
B) 1/4
C) 1/2
D) 1/32
E) 1/8
Correct Answer:
Verified
Correct Answer:
Verified
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