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If the amount of radioactive iodine-123 in a sample
Chapter 4, Problem 62AQP(choose chapter or problem)
QUESTION:
If the amount of radioactive iodine-123 in a sample decreases from 0.4 g to 0.1 g in 26.4 h, what is the half-life, in hours, of iodine-123? (4.4)
Questions & Answers
QUESTION:
If the amount of radioactive iodine-123 in a sample decreases from 0.4 g to 0.1 g in 26.4 h, what is the half-life, in hours, of iodine-123? (4.4)
ANSWER:Solution 62 AQP:Here, we are going to calculate the half life of iodine-123.Step 1: Given that,Initial amount of I-123 = 0.4 gFinal amount of I-123 = 0.1 gTime =26.4 hHalf-life of a radioactive isotope is defined as the amount of time taken for one half of the sample.The radioactive decay is the 1st order kinetics. From the 1st order reaction= = -1