The isotope Cs undergoes beta emission with a half-life of 30 years. a. Write a balanced nuclear equation for this reaction. b. What fraction of Cs-137 remains in a sample of the isotope after 60 years?

The isotope Cs undergoes beta emission with a half-life of 30 years. a. Write a balanced nuclear equation for this reaction. b. What fraction of Cs-137 remains in a sample of the isotope after 60 years?

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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Concept explainers

Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.

Question

The isotope "Cs undergoes beta emission with a half-life of 30 years.
137
55
a. Write a balanced nuclear equation for this reaction.
b. What fraction of Cs-137 remains in a sample of the isotope after 60 years?
c. What mass of Cs will be left in a 24.0 g sample of Cs after 90 years?
55
d. What fraction of Cs-137 has decayed after 120 years?

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