The half-life of 1311 is 8.04 days. (a) Convert the half-life to seconds. (b) Calculate the decay constant for this isotope. (c) Convert 0.550 µCi to the SI unit the becquerel. Bq

Biochemistry
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Chapter1: Biochemistry: An Evolving Science
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The half-life of 1311 is 8.04 days.
(a) Convert the half-life to seconds.
(b) Calculate the decay constant for this isotope.
s-1
(c) Convert 0.550 µCi to the SI unit the becquerel.
|Bq
(d) Find the number of 1311 nuclei necessary to produce a sample with an activity of
0.550 μCi.
| 1311 nuclei
(e) Suppose the activity of a certain 131I sample is 7.10 mCi at a given time. Find the
number of half-lives the sample goes through in 40.2 d and the activity at the end of
that period. (Enter your answer for the number of half-lives to at least one decimal
place.)
half-lives
mCi
Transcribed Image Text:The half-life of 1311 is 8.04 days. (a) Convert the half-life to seconds. (b) Calculate the decay constant for this isotope. s-1 (c) Convert 0.550 µCi to the SI unit the becquerel. |Bq (d) Find the number of 1311 nuclei necessary to produce a sample with an activity of 0.550 μCi. | 1311 nuclei (e) Suppose the activity of a certain 131I sample is 7.10 mCi at a given time. Find the number of half-lives the sample goes through in 40.2 d and the activity at the end of that period. (Enter your answer for the number of half-lives to at least one decimal place.) half-lives mCi
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