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## anonymous 3 years ago The radioactive substance krypton-91 has a very short half-life of about 10 seconds. What is the decay constant for this substance?

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1. Kainui

$\frac{ \ln2 }{ t _{1/2} }=k$ I can derive this for you if you'd like.

2. anonymous

half life= 0.693/decay constant

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