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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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cliff313342 cliff313342
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3 years ago
An archaeological sample contains 0.743 g of lead-206 and 2.145 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 1.540 × 10–10/ year. Determine the half-life of the uranium.


▸ 4.500 × 109 years

▸ 1.067 × 10–10 years

▸ depends on the age of the sample

▸ depends on the organic content of the sample

▸ Two of these are correct.
Textbook 
Chemistry: An Atoms First Approach

Chemistry: An Atoms First Approach


Edition: 3rd
Authors:
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BenDover@1BenDover@1
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3 years ago
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cliff313342 Author
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3 years ago
Good timing, thanks!
Shuqin
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Yesterday
Just got PERFECT on my quiz
smdavis
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2 hours ago
Correct Slight Smile TY
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