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fnmw fnmw
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8 months ago
An archaeological sample contains 0.700 g of lead-206 and 2.144 g of uranium-238. Assume that all the lead now present in the rock came from the radioactive decay of the uranium and that no appreciable amounts of other radioactive nuclides are present in the sample. The decay rate constant for the uranium is 1.54 × 10–10/year. What is the age of the sample?


8.41 × 109 years

9.03 × 108 years

2.08 × 109 years

6.33 × 109 years

None of these are correct.
Textbook 

Chemistry: An Atoms First Approach


Edition: 3rd
Authors:
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kennettjkennettj
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8 months ago
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2.08 × 109 years
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