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How Long Will It Take a 4 0.140kBq0.140 \mathrm { kBq }

Question 143

Multiple Choice

How long will it take a 4.50-kBq sample of material to reach an activity level of 0.140kBq0.140 \mathrm { kBq } if the half-life of the sample is 435 years?


A) 3245 years
B) 1993 years
C) 2178 years
D) 14,478 years

Correct Answer:

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