For Exercises 45 and 46, use the following information. Iodine-131 is a radioactive

Chapter 11, Problem 45

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For Exercises 45 and 46, use the following information. Iodine-131 is a radioactive element used to study the thyroid gland. 45. RESEARCH Use the Internet or other resource to find the half-life of Iodine-131, rounded to the nearest day. This is the amount of time it takes for half of a sample of Iodine-131 to decay into another element.

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