Problem

Suppose there are 1 × 109 radioactive atoms in a given sample of iodine which has a...

Suppose there are 1 × 10⁹ radioactive atoms in a given sample of iodine which has a half-life of 13 hours.

(a) What is the radioactivity of the original sample?

(b) How many radioactive atoms can be expected to be present after 24 hours?

(c) What is the probability that there will be 1 × 10⁸ radioactive atoms left after 24 hours

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Solutions For Problems in Chapter 7

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