Imagine you collected a volcanic rock while on vacation to Hawaii and you want to know how old it is. Suppose a laboratory that analyzes your rock and tells you that there are 4 micrograms of Uranium-234 (parent) and 124 micrograms of Thorium- 230 (daughter) in your sample. Given that the half-life of this isotope pair is 245 million years, how old is your rock?
Imagine you collected a volcanic rock while on vacation to Hawaii and you want to know how old it is. Suppose a laboratory that analyzes your rock and tells you that there are 4 micrograms of Uranium-234 (parent) and 124 micrograms of Thorium- 230 (daughter) in your sample. Given that the half-life of this isotope pair is 245 million years, how old is your rock?
Chemistry for Engineering Students
4th Edition
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter14: Nuclear Chemistry
Section: Chapter Questions
Problem 14.82PAE
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Transcribed Image Text:Imagine you collected a volcanic rock while on vacation to Hawaii and you want to
know how old it is. Suppose a laboratory that analyzes your rock and tells you that
there are 4 micrograms of Uranium-234 (parent) and 124 micrograms of Thorium-
230 (daughter) in your sample. Given that the half-life of this isotope pair is 245
million years, how old is your rock?
0.122 billion years
0.245 billion years
0.490 billion years
0.735 billion years
0.980 billion years
1.225 billion years
1.470 billion years
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