Problem: A 50.0 mg sample of an unknown radioactive substance was placed in storage and its mass measured periodically. After 18.9 days, the amount of radioactive substance had decreased to 3.13 mg What is the half-life of the unknown radioactive substance?

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A 50.0 mg sample of an unknown radioactive substance was placed in storage and its mass measured periodically. After 18.9 days, the amount of radioactive substance had decreased to 3.13 mg What is the half-life of the unknown radioactive substance?

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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.

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Based on our data, we think this problem is relevant for Professor Mahato's class at TXSTATE.