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Concept explainers
Radioactive decay and mass spectrometry are often used to date rocks after they have cooled from a magma.
A rock was dated by assaying the product of this decay. The mass spectrum of a homogenized sample of rock showed the
Calculate the following:
the
a. the original concentration of Rb in the rock in ppm
b. the percentage of rubidium-87 decayed in the rock
c. the time since the rock cooled
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Chapter 25 Solutions
EBK GENERAL CHEMISTRY
- Chemistry: An Atoms First ApproachChemistryISBN:9781305079243Author:Steven S. Zumdahl, Susan A. ZumdahlPublisher:Cengage LearningChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning
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