Multiple Choice
The isotope has a half-life of 5,715 years. After 2,000 years, a sample of the isotope is reduced to 2.1 grams. What was the initial size of the sample (in grams) ? How much will remain after 20,000 years (i.e., after another 18,000 years) ? Round your answers to four decimal places.
A) 1.8735 g, 0.1656 g
B) 4.2824 g, 0.3786 g
C) 2.6765 g, 0.2366 g
D) 3.7471 g, 0.3313 g
E) 3.4794 g, 0.3076 g
Correct Answer:

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Correct Answer:
Verified
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