Stinkblowe4687 Stinkblowe4687

10-05-2018
Chemistry

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Krypton-79 has a half-life of 35 hours. how many half-lives have passed after 105 hours?

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kenmyna kenmyna

19-05-2018

The number of half -lives that has passed after 105 hours for krypton-79 that has half-life of 35 hours is calculated as below

if 1 half life = 35 hours

what about 105 hours = ? half-lives

= (1 half life x105 hours) /35 hours = 3 half-lives has passed after 105 hours

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