# Problem: How many mg of a 3.50mg sample of Tc-99 will remain after 4 half-lives have passed? A. 0.055mg B. 0.109mg C. 0.219mg D. 0.438mg E. 0.875 mg

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How many mg of a 3.50mg sample of Tc-99 will remain after 4 half-lives have passed?

A. 0.055mg

B. 0.109mg

C. 0.219mg

D. 0.438mg

E. 0.875 mg

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Our tutors have indicated that to solve this problem you will need to apply the Identifying Reaction Order concept. If you need more Identifying Reaction Order practice, you can also practice Identifying Reaction Order practice problems.

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