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What is the total number of years that must pass before only 25.00 grams of an original 100.0 gram sample of c-14 remains unchanged?
Wiki User
∙ 11y ago
25/100 = 1/4 of the original sample.
The "half-life" must pass twice, yielding (1/2) x (1/2) = 1/4 of the original sample.
The half-life of Carbon-14 is listed as ( 5,730 ± 40 ) years.
Twice that is ( 11,460 ± 80 ) years
Wiki User
∙ 11y ago
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