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Radioactive vanadium-48 decays with a half-life of 16.0 days. a. What is the value of k ins? b. A sample contains 84.0 mg V. How many decay events will be produced in the first second? Assume the atomic mass of V is 48.0 u. decays's c. A chemist obtains a fresh sample of V and measures its radioactivity. She then determines that to do an experiment, the radioactivity cannot fall below 25% of the initial measured value. How long does she have to do the experiment? days

Radioactive vanadium-48 decays with a half-life of 16.0 days. a. What is the value of k ins? b. A sample contains 84.0 mg V. How many decay events will be produced in the first second? Assume the atomic mass of V is 48.0 u. decays's c. A chemist obtains a fresh sample of V and measures its radioactivity. She then determines that to do an experiment, the radioactivity cannot fall below 25% of the initial measured value. How long does she have to do the experiment? days

Chemistry: An Atoms First Approach
Chemistry: An Atoms First Approach
2nd Edition
ISBN:9781305079243
Author:Steven S. Zumdahl, Susan A. Zumdahl
Publisher:Steven S. Zumdahl, Susan A. Zumdahl
Chapter18: The Nucleus: A Chemist's View
Section: Chapter Questions
Problem 28E
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Radioactive vanadium-48 decays with a half-life of 16.0 days. a. What is the value of k in s1, 48 b. A sample contains 84.0 mg V. How many decay events will be produced in the first second? Assume the atomic mass ofV is 48.0 u. 48 decays's c. A chemist obtains a fresh sample of V and measures its radioactivity. She then determines that to do an experiment, the radioactivity cannot fall below 25%6 of the initial measured value. How long does she have to do the experiment? days
Transcribed Image Text:Radioactive vanadium-48 decays with a half-life of 16.0 days. a. What is the value of k in s1, 48 b. A sample contains 84.0 mg V. How many decay events will be produced in the first second? Assume the atomic mass ofV is 48.0 u. 48 decays's c. A chemist obtains a fresh sample of V and measures its radioactivity. She then determines that to do an experiment, the radioactivity cannot fall below 25%6 of the initial measured value. How long does she have to do the experiment? days
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