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5.00 hours of decay, 3.4g of the substance remain. What is the

5.00 hours of decay, 3.4g of the substance remain. What is the

Chemistry
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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An unknown radioactive substance is currently decaying. Initially, the sample contained 17.8g of the substance. After 5.00 hours of decay, 3.4g of the substance remain. What is the half-life (t1/2) of the substance?
Transcribed Image Text:An unknown radioactive substance is currently decaying. Initially, the sample contained 17.8g of the substance. After 5.00 hours of decay, 3.4g of the substance remain. What is the half-life (t1/2) of the substance?
Expert Solution
Step 1

Initial mass of substance is 17.8g

Mass of substance after left is 3.4g

Decay time 5 hours 

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