SOLUTION: The decay rate of krypton -85 is 6.3% per year. What is the half-life?

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Question 212161This question is from textbook Elementary and Intermediate Algebra
: The decay rate of krypton -85 is 6.3% per year. What is the half-life? This question is from textbook Elementary and Intermediate Algebra

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
The decay rate of krypton -85 is 6.3% per year. What is the half-life?
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A(t) = Ao*(0.937)^t
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Half-life:
1/2Ao =Ao*(0.937)^t
t = ln(1/2)/ln0.937
t = 10.652 years (half-life)
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Cheers,
stan H.