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Q1. If a tree dies and the trunk remains undisturbed for 13,750 years, what percentage of the original 14C is still present? (The half-life of 14C is 5730 years.)

a. 2.20%
b. 45.0%
c. 19.0%
d. 5.20%

1 answer

(1/2)^(13750/5730) = 0.1895

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