Problem: Calculate the amount of radioactive material remaining after a given period of time.The half-life of radon-222 is 3.82 days. If you begin with 40.3 mg of this isotope, what mass remains after 4.43-days have passed? 

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Calculate the amount of radioactive material remaining after a given period of time.

The half-life of radon-222 is 3.82 days. If you begin with 40.3 mg of this isotope, what mass remains after 4.43-days have passed? 

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Our tutors have indicated that to solve this problem you will need to apply the First Order Half Life concept. You can view video lessons to learn First Order Half Life. Or if you need more First Order Half Life practice, you can also practice First Order Half Life practice problems.