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Read Section 14.5. You can click on the Review link to access the section in your eText. Geologists can estimate the age of rocks by their uranium-238 content. The uranium is incorporated n the rock as it hardens and then decays with first- arder kinetics and a half-life of 4.5 billion years. A ock is found to contain 82.3% of the amount of ranium-238 that it contained when it was formed. The amount that the rock contained when it was armed can be deduced from the presence of the cay products of U-238.) How old is the rock? Express the age in years to two significant figures. ▸ View Available Hint(s) ΜΕ ΑΣΦ t-1.2.10% ? уг

Read Section 14.5. You can click on the Review link to access the section in your eText. Geologists can estimate the age of rocks by their uranium-238 content. The uranium is incorporated n the rock as it hardens and then decays with first- arder kinetics and a half-life of 4.5 billion years. A ock is found to contain 82.3% of the amount of ranium-238 that it contained when it was formed. The amount that the rock contained when it was armed can be deduced from the presence of the cay products of U-238.) How old is the rock? Express the age in years to two significant figures. ▸ View Available Hint(s) ΜΕ ΑΣΦ t-1.2.10% ? уг

Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter25: Nuclear Chemistry
Section: Chapter Questions
Problem 78SCQ
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Read Section 14.5. You can click on the Review link to access the section in your eText. Geologists can estimate the age of rocks by their uranium-238 content. The uranium is incorporated in the rock as it hardens and then decays with first- order kinetics and a half-life of 4.5 billion years. A rock is found to contain 82.3% of the amount of uranium-238 that it contained when it was formed. The amount that the rock contained when it was ormed can be deduced from the presence of the ecay products of U-238.) Part A How old is the rock? Express the age in years to two significant figures. View Available Hint(s) ΜΕ ΑΣΦ t= 1.2.10% уг
Transcribed Image Text:Read Section 14.5. You can click on the Review link to access the section in your eText. Geologists can estimate the age of rocks by their uranium-238 content. The uranium is incorporated in the rock as it hardens and then decays with first- order kinetics and a half-life of 4.5 billion years. A rock is found to contain 82.3% of the amount of uranium-238 that it contained when it was formed. The amount that the rock contained when it was ormed can be deduced from the presence of the ecay products of U-238.) Part A How old is the rock? Express the age in years to two significant figures. View Available Hint(s) ΜΕ ΑΣΦ t= 1.2.10% уг
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