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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Please answer iii

Transcribed Image Text:Q3) This problem uses the semi-empirical mass formula to investigate the masses of isobars with
A=100 and their decays.
D Using the semi-empirical mass formula (SEMF) for atomic masses, predict the isobar of A=100
with the lowest mass.
100-
II) The mass of Tc is 99.90765 u compared to 99.9042197 u for Ru.
Which terms in the SEMF change between the two nuclei? Calculate the change in each
contribution. Compare the overall difference in mass for the two nuclei predicted by the SEMF
with the experimental value for the difference in mass.
100
44R..
III) List the possible decay modes for Tc and the energy released in each decay. Note, 22MO
100
43
has a mass of 99.907477 u.
M Is it possible for 109Mo to decay and if so, how?
424
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