Logarithms: Radioactive Decay
View the Lesson | MATHguide homepage Updated October 29th, 2017

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Formula: Radioactive Decay Formula
Given: There are 14 grams of Nickel-63.
Nickel-63 has a half-life of 10 decades.
Find:  Use the formula above to calculate the time it would take for the given mass to degrade down to 0.2 grams. Calculate the solution for 't' to the nearest tenth using logarithms.
Solution:   t = decades