SOLUTION: A fossilized leaf contains 70% of its normal amount of carbon 14. How old is the fossil to the nearest year? Use 5600 years as the half life of carbon 14.
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Question 444717: A fossilized leaf contains 70% of its normal amount of carbon 14. How old is the fossil to the nearest year? Use 5600 years as the half life of carbon 14.
You can put this solution on YOUR website! A fossilized leaf contains 70% of its normal amount of carbon 14. How old is the fossil to the nearest year? Use 5600 years as the half life of carbon 14.
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Equation:
0.7*Ao = Ao*(1/2)^(t/5600)
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(1/2)^(t/5600) = 0.7
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Take the log of both sides to get:
(t/5600)*log(1/2) = log(0.7)
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(t/5600) = log(0.7)/log(1/2) = 0.5146
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t = 5600*0.5146
t = 2881.61 yrs.
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Cheers,
Stan H.
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