ANSWER
EXPLANATION
Given that
The original mass of the sample is 160 grams
The undecayed mass of the sample is 120 grams
Time is 8 days
Follow the steps below to find the half-life
Write the formula for calculating the half-life of a sample
[tex]\text{ N = N}_o\text{ \lparen}\frac{1}{2})^{\frac{t}{\tau}}[/tex]
Substitute the given data into the formula
[tex]undefined[/tex]
