Chemistry Practice Problems Identifying Reaction Order Practice Problems Solution: Fluorine-18 undergoes positron emission with a hal...

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Solution: Fluorine-18 undergoes positron emission with a half life of 1.10x 10  2 minutes. If a patient is given a 248 mg dose for a PET scan, how long will it take for the amount of fluorine-18 to drop to 83 mg? (assume that none of the fluorine is excreted from the body) A. 211 minutes B. 99 minutes C. 300 minutes D. 132 minutes E. 174 minutes

Problem

Fluorine-18 undergoes positron emission with a half life of 1.10x 10  2 minutes. If a patient is given a 248 mg dose for a PET scan, how long will it take for the amount of fluorine-18 to drop to 83 mg? (assume that none of the fluorine is excreted from the body)

A. 211 minutes

B. 99 minutes

C. 300 minutes

D. 132 minutes

E. 174 minutes