Fluorine-18, which has a half-life of 110 min, is used in

Last updated: 7/31/2022

Fluorine-18, which has a half-life of 110 min, is used in PET scans. If 200 mg of fluorine-18 was shipped, and it took 5.5 hours for it to arrive, how many milligrams of the radioisotope are still active? (5.4) Cerium -141, used to measure blood flow to the heat, has a half-life of 32.5 days. (5.2, 5.4) a. Write the balanced nuclear equation for the beta decay of cerium-141. b. How many days are required for 28 mg of cerium-141 to decay to 1.75 mg of cerium-141?