For a radioactive isotope with t1/2 %D 38.7 hr, how many hours will it take for a 3.27 mCi sample to decay to .351 mCi? O 86.4 O 189 O.0567 O 54.1 Ο 125
For a radioactive isotope with t1/2 %D 38.7 hr, how many hours will it take for a 3.27 mCi sample to decay to .351 mCi? O 86.4 O 189 O.0567 O 54.1 Ο 125
Chemistry for Today: General, Organic, and Biochemistry
9th Edition
ISBN:9781305960060
Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen
Publisher:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen
Chapter10: Radioactivity And Nuclear Processes
Section: Chapter Questions
Problem 10.84E
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![For a radioactive isotope with t1/2
%D
38.7 hr, how many hours will it take
for a
3.27 mCi sample to decay to .351
mCi?
O 86.4
Ο 189
0.0567
O 54.1
Ο 125](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0aa08614-925f-4bd5-8ff0-4b0370ca0a24%2F679a52f6-ec35-4fa0-b5b2-c07ff8abce45%2Fegk2dsu_processed.jpeg&w=3840&q=75)
Transcribed Image Text:For a radioactive isotope with t1/2
%D
38.7 hr, how many hours will it take
for a
3.27 mCi sample to decay to .351
mCi?
O 86.4
Ο 189
0.0567
O 54.1
Ο 125
![For the same radioactive isotope as in
the previous problem, which has t1/2
= 38.7 hr,
how many mg are left if 43.7 mg
sample of the isotope decays for 6.15
hr?
О 39.1
0.0255
O 33.9
О 37.3
О 397](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0aa08614-925f-4bd5-8ff0-4b0370ca0a24%2F679a52f6-ec35-4fa0-b5b2-c07ff8abce45%2Fcj1k7m_processed.jpeg&w=3840&q=75)
Transcribed Image Text:For the same radioactive isotope as in
the previous problem, which has t1/2
= 38.7 hr,
how many mg are left if 43.7 mg
sample of the isotope decays for 6.15
hr?
О 39.1
0.0255
O 33.9
О 37.3
О 397
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