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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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pbjt pbjt
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5 years ago
A geological sample is found to have a Pb-206/U-238 mass ratio of 0.337/1.00.  Assuming there was no Pb-206 present when the sample was formed, how old is it?  The half-life of U-238 is 4.5  109 years.
A) 7.3  1011 years
B) 1.4  1010 years
C) 2.4  1010 years
D) 2.1  109 years
E) 7.1  109 years
Textbook 
Chemistry: A Molecular Approach

Chemistry: A Molecular Approach


Edition: 4th
Author:
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TomeauTomeau
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5 years ago
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pbjt Author
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5 years ago
This calls for a celebration Person Raising Both Hands in Celebration
Gorgio_De
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Yesterday
Thank you, thank you, thank you!
Mcb
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2 hours ago
Smart ... Thanks!
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