A fossilized leaf contains 8% 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.
1 answer:
Elapsed time = half-life * log(beginning amount / ending amount) / log (2) elapsed time = 5,600 * log (100 / 8) / log (2) elapsed time = 5,600 * log (12.5) / log (2) elapsed time = 5,600 * (1.096910013 / 0.30102999566) elapsed time = 5,600 *
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<span>
<span>
3.6438561898
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elapsed time =
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20,405.5946628585
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</span></span><span><span>elapsed time =
20,406 (to nearest year) </span> </span> Source: http://www.1728.org/halflife.htm
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