Asked by Jannet
A radioactive isotope source has a mass of 120ug. If the isotope had a half life of 20s, what would be the mass if the isotope after 2 mins?
Answers
Answered by
DrBob222
k = 0.693/t<sub>1/2</sub>
Then
ln(No/N) = kt
No = 120 ug
N = solve for this
k = from above
t = 120 sec.
Then
ln(No/N) = kt
No = 120 ug
N = solve for this
k = from above
t = 120 sec.
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