Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Question
Radioactive iodine (Iodine-131) has a half-life of 8.04 days. How long will it take for 150g of Iodine-131 to decay until only 25g remains?
Expert Solution
Step 1
Given:
The half-life of Iodine-131, = 8.04 days.
The initial amount of Iodine-131, (N0) = 150 g.
The remaining amount of Iodine-131, (N) = 25 g.
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