As a result of being exposed to the radiation released during the Chernobyl nuclear accident, the dose of iodine-131 in a person’s body is 7.4 mC (1 mC = 1 × 10-3 Ci). Use the relationship rate = λN to calculate the number of atoms of iodine-131 to which this radioactivity corresponds. (The half-life of 131I is 8.1 days.)
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