Asked by bob
Strontium-90 has half-life of 28 years. if a 1.00-mg sample was stored for 112 years. what mass of Sr-90 would remain?
Answers
Answered by
DrBob222
k = 0.693/t<sub>1/2</sub>
Substitute k in the following:
ln(No/N) = kt
No = 1 mg
N = mg remaining after t time
k from above.
t = 112 years.
Substitute k in the following:
ln(No/N) = kt
No = 1 mg
N = mg remaining after t time
k from above.
t = 112 years.
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