Logarithms: Radioactive Decay
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Formula: Radioactive Decay Formula
Given: There are 15 grams of Rutherfordium-261.
Rutherfordium-261 has a half-life of 81 seconds.
Find:  Use the formula above to calculate the time it would take for the given mass to degrade down to 0.04 grams. Calculate the solution for 't' to the nearest tenth using logarithms.
Solution:   t = seconds