The radioactive isotope of lead, Pb-209, decays at a rate proportional to the amount present at time t and has a half-life of 3.3 hours. If 1 gram of this isotope is present initially, how long will it take for 90% of the lead to decay?
The radioactive isotope of lead, Pb-209, decays at a rate proportional to the amount present at time t and has a half-life of 3.3 hours. If 1 gram of this isotope is present initially, how long will it take for 90% of the lead to decay?
Materials Science And Engineering Properties
1st Edition
ISBN:9781111988609
Author:Charles Gilmore
Publisher:Charles Gilmore
Chapter4: Temperature Effects On Atom Arrangements And Atom Motion
Section: Chapter Questions
Problem 4.14P
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![The radioactive isotope of lead, Pb-209, decays at a rate proportional to the amount present at time t and has
a half-life of 3.3 hours. If 1 gram of this isotope is present initially, how long will it take for 90% of the lead to
decay?
Select the correct response:
12.32 hours
10.96 hours
none of the choices
8.92 hours](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc34ad7f0-f623-4b90-b356-3d064c057ca7%2F717cab75-871e-48bc-8544-e9c973fddd34%2Ft42fig_processed.png&w=3840&q=75)
Transcribed Image Text:The radioactive isotope of lead, Pb-209, decays at a rate proportional to the amount present at time t and has
a half-life of 3.3 hours. If 1 gram of this isotope is present initially, how long will it take for 90% of the lead to
decay?
Select the correct response:
12.32 hours
10.96 hours
none of the choices
8.92 hours
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