for a 86.1 mg sample of 90Sr to decay to 23.6 mg of 90Sr?The half-life of 90Sr is 28.8 years. How long will it take (in years)IMPORTANT: When entering your answer:• Enter the number only (no units)• Do not leave any spaces• Use a leading zero before the decimal when necessaryReport your number to 1 decimal place (regardless of thesignificant figures)• Correctly round your answer to the 1st decimal place(allowed margin of error is only + 0.1, so always use un-rounded numbers in your calculations) If the last digit is azero it will not display once you click away, but the answerwill still be marked correct.Examples: 0.1 or 2345.6

Answered: The half-life of 90Sr is 28.8 years.…

The half-life of 90Sr is 28.8 years. How long will it take (in years) for a 86.1 mg sample of 20Sr to decay to 23.6 mg of 90Sr? IMPOD TANT. Who

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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Writing and Balancing Nuclear Equations

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Question

for a 86.1 mg sample of 90Sr to decay to 23.6 mg of 90Sr?
The half-life of 90Sr is 28.8 years. How long will it take (in years)
IMPORTANT: When entering your answer:
• Enter the number only (no units)
• Do not leave any spaces
• Use a leading zero before the decimal when necessary
Report your number to 1 decimal place (regardless of the
significant figures)
• Correctly round your answer to the 1st decimal place
(allowed margin of error is only + 0.1, so always use un-
rounded numbers in your calculations) If the last digit is a
zero it will not display once you click away, but the answer
will still be marked correct.
Examples: 0.1 or 2345.6

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