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Get Full Access to Chemistry: The Central Science - 12 Edition - Chapter 21 - Problem 53e
Get Full Access to Chemistry: The Central Science - 12 Edition - Chapter 21 - Problem 53e

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# Nuclear Power and Radioisotopes (Sections)Iodine-131 is a ISBN: 9780321696724 27

## Solution for problem 53E Chapter 21

Chemistry: The Central Science | 12th Edition

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Problem 53E

Problem 53E

Iodine-131 is a convenient radioisotope to monitor thyroid activity in humans. It is a beta emitter with a half-life of 8.02 days. The thyroid is the only gland in the body that uses iodine. A person undergoing a test of thyroid activity drinks a solution of NaI, in which only a small fraction of the iodide is radioactive. (a) Why is NaI a good choice for the source of iodine? (b) If a Geiger counter is placed near the person’s thyroid (which is near the neck) right after the sodium iodide solution is taken, what will the data look like as a function of time? (c) A normal thyroid will take up about 12% of the ingested iodide in a few hours. How long will it take for the radioactive iodide taken up and held by the thyroid to decay to 0.01% of the original amount?

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MGT 218: Chapter 6: Continuous Random Variables and the Normal distribution (PART 2) with Solution for Exercises on Text book. Theory : Standardizing a Normal Distribution : Converting an x Value to a z Value : For a normal random variable x, a particular value of x can be converted to its corresponding z value by using the formula : where Mean and standard deviation are the mean and standard deviation of the normal distribution of x, respectively. When x follows a normal distribution , z follows the standard normal distribution. Practice Questions and Solutions on Textbook ( Introductory Statistics 8e edition : Prem S.Mann) – I think this will help because the answers are not provided on the textbook. 6.38 ) According to the U.S.Employment and Training Admin

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