Multiple Choice
The half-life of cobalt-60 is 5.20 y.How many milligrams of a 1.000-mg sample remain after 6.55 years?
A) 0.418
B) 1.61 × 10-15
C) 2.390
D) 0.794
E) 0.582
Correct Answer:
Verified
Correct Answer:
Verified
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