9090The half-life of " Sr is 28 years. How long will it take for a given sample of " Sr to be 83% decomposed?O 72 yearsO 8 yearsO 9.0 half-livesO 1.8 yearsNone of these choices are correct. Calculate how long will it take for a sample of a radionuclide with a half-life of 39.4 days decay to 1.0% of its original value.O 394 daysO 0.57 daysO 262 daysO 131 days

1) half life = 28 years Decomposed = 83 % 2) half life = 39.4 days

Answered: 90 The half-life of "Sr is 28 years.…

90 The half-life of "Sr is 28 years. How long will it take for a given sample of "Sr to be 83% decomposed? O 72 years O 8 years O 9.0 half-lives O 1.8 years O None of these choices are correct.

Chemistry

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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

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Question

90
90
The half-life of " Sr is 28 years. How long will it take for a given sample of " Sr to be 83% decomposed?
O 72 years
O 8 years
O 9.0 half-lives
O 1.8 years
None of these choices are correct.

Calculate how long will it take for a sample of a radionuclide with a half-life of 39.4 days decay to 1.0% of its original value.
O 394 days
O 0.57 days
O 262 days
O 131 days

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