25.Iodine-123, used in thyroid therapy, has a half-life of 13.27 hours. How many half-lives arerequi
問題詳情
25.Iodine-123, used in thyroid therapy, has a half-life of 13.27 hours. How many half-lives arerequired for a 160 mg sample of iodine-123 to decay to 5.0 mg? (A)0.031 (B)1.0 (C)5.0 (D) 32