The half-life of 131I is 8.04 days. (d) Find the number of 131I nuclei necessary to produce a sample with an activity of 0.550 ?Ci. (e) Suppose the activity of a certain 131I sample is 6.90 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
The half-life of 131I is 8.04 days.
(d) Find the number of 131I nuclei necessary to produce a sample with an activity of 0.550 ?Ci.
(e) Suppose the activity of a certain 131I sample is 6.90 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 |
(d) Find the number of 131I nuclei necessary to produce a sample with an activity of 0.550 ?Ci.
(e) Suppose the activity of a certain 131I sample is 6.90 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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