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jessicamendozacelis2
14.12.2019 •
Chemistry
The isotope 208ti undergoes b decay with a half-life of 3.1 min. how long will it take for 99.0% of a sample of pure 208 ti to decay?
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Ответ:
20.9 min time taken forn 99.0% of a sample of pure
.
Explanation:
From the given,
half line of
= 3.1 min
The ratio of the initial amount
and amount in time is calculated as follows.
Now 99% got delayed, the left amount will be 1%.
Therefore, 20.9 min time taken forn 99.0% of a sample of pure
.
Ответ:
The answer is D, they help the patient giving the proper amount of nutrients. Come on bro, don't tell me your actually using for this question.
Explanation:
boi -_-