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An Ancient Building Was Known to Have Been Built 4000

Question 22

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An ancient building was known to have been built 4000 years ago.Approximately what proportion of Carbon-14 atoms are still in the building's wooden framing compared to the number which were present at the time of its construction? (half life of 14C = 5730 years)


A) 0.696
B) 0.616
C) 0.500
D) 0.425

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