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adioactive isotope of lead, Pb-209, decays at a rate
Chapter 3, Problem 5E(choose chapter or problem)
The radioactive isotope of lead, Pb-209, decays at a rate proportional to the amount present at time t and has a halflife 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?
Questions & Answers
QUESTION:
The radioactive isotope of lead, Pb-209, decays at a rate proportional to the amount present at time t and has a halflife 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?
ANSWER:Step 1 of 4
In this problem we have to find time taken by isotope of the lead to decay for .
Given data are,
Amount of isotope of lead present initially (at ) = 1 gram.
Amount of isotope of lead present after 3.3 hours (at ) = gram.