Be sure to answer all parts. Radioactive iodine−131 (t1/2 = 8.0 days) decays to form xenon−131...

Question

Question

Be sure to answer all parts.

Radioactive iodine−131 (t_1/2 = 8.0 days) decays to form xenon−131 by emission of a

β

particle.

How much

of each isotope is present after each time interval if 82 mg of iodine−131 was present initially:

(a) 8.0 days;

(b) 32 days?

(a) mg of iodine−131, mg of xenon−131

(b) mg of iodine−131, mg of xenon−131

Answer 1

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