Choose the one alternative that best completes the statement or answers the question.
-The half-life of a radioactive element is 130 days, but your sample will not be useful to you after 80% of the radioactive nuclei originally present have disintegrated. About how many days can you use the sample?
A) 312
B) 302
C) 287
D) 297

Question

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The Answer of Choose the one alternative that best completes the statement or answers the question.
-The half-life of a radioactive element is 130 days, but your sample will not be useful to you after 80% of the radioactive nuclei originally present have disintegrated. About how many days can you use the sample?
A) 312
B) 302
C) 287
D) 297

Choose the One Alternative That Best Completes the Statement or Answers