Radioactive Decay Iodine 131 is a radioactive material that decays according to the
Chapter 6, Problem 4(choose chapter or problem)
Radioactive Decay Iodine 131 is a radioactive material that decays according to the function where is the initial amount present and A is the amount present at time t (in days). Assume that a scientist has a sample of 100 grams of iodine 131. (a) What is the decay rate of iodine 131? (b) How much iodine 131 is left after 9 days? (c) When will 70 grams of iodine 131 be left? (d) What is the half-life of iodine 131?
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