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lesantik [10]
1 year ago
9

A sample of radioactive waste has a half-live of 40 years and an activity level of 4 curies. After how many years will the activ

ity level of this sample be 0. 5 curies?
Chemistry
1 answer:
Westkost [7]1 year ago
8 0

After 160 years, the activity level of the sample will be 0.5 curies.

<h3>What is half-life?</h3>

Half life of any radioactive waste is the half decay of that product.

The formula is \dfrac{\lambda }{\lambda_1} = 2^\dfrac{a}{b}

Where, λ is 4 cruies

λ1 is 0.5 cruies

b = 40 years

Putting the values in the equation

\dfrac{4}{0.5} = 2^\dfrac{a}{40}\\\\\\\dfrac{a}{40} =  4\\ = 160 years

Thus, the correct option is 160 years.

Learn more about half-life

brainly.com/question/24710827

#SPJ4

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