Logarithms: Radioactive Decay
View the Lesson | MATHguide homepage Updated August 9th, 2021

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Formula: Radioactive Decay Formula
Given: There are 13 grams of Beryllium-11.
Beryllium-11 has a half-life of 13.8 seconds.
Find:  Use the formula above to calculate the time it would take for the given mass to degrade down to 0.47 grams. Calculate the solution for 't' to the nearest tenth using logarithms.
Solution:   t = seconds