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A 1.00-gram sample cantains two radioactive isotopes A and B. The half-life of isotope A is 2 hrs. After 1 hr, the amounts of A and B in grams left in the sample are equal. After 3 hrs, the ratio of the amounts of A and B left in the sample is 5:3. a) What is the half-life of isotope B? b) What are the amounts of isotopes A and B in the initial sample?

A 1.00-gram sample cantains two radioactive isotopes A and B. The half-life of isotope A is 2 hrs. After 1 hr, the amounts of A and B in grams left in the sample are equal. After 3 hrs, the ratio of the amounts of A and B left in the sample is 5:3. a) What is the half-life of isotope B? b) What are the amounts of isotopes A and B in the initial sample?

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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A 1.00-gram sample cantains two radioactive isotopes A and B. The half-life of isotope A is 2 hrs. After 1 hr, the amounts of A and B in grams left in the sample are equal. After 3 hrs, the ratio of the amounts of A and B left in the sample is 5:3. a) What is the half-life of isotope B? b) What are the amounts of isotopes A and B in the initial sample?
Transcribed Image Text:A 1.00-gram sample cantains two radioactive isotopes A and B. The half-life of isotope A is 2 hrs. After 1 hr, the amounts of A and B in grams left in the sample are equal. After 3 hrs, the ratio of the amounts of A and B left in the sample is 5:3. a) What is the half-life of isotope B? b) What are the amounts of isotopes A and B in the initial sample?
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