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Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Radioactive iodine−131 (t1/2 = 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 66 mg of iodine−131 was present initially: (a) 16 days; (b) 24 days? (a) mg of iodine−131, mg of xenon−131 (b) mg of iodine−131, mg of xenon−131
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- Be sure to answer all parts. Radioactive iodine−131 (t1/2 = 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 84 mg of iodine−131 was present initially: (a) 16 days; (b) 24 days? (a) mg of iodine−131, mg of xenon−131 (b) mg of iodine−131, mg of xenon−131arrow_forwardBe sure to answer all parts. How much phosphorus−32 remains from a 1.00 g sample after each of the following number of half-lives: (a) 3; (b) 8? (a) g of phosphorus−32 remains. (b) g of phosphorus−32 remains.arrow_forwardStrontium-90 is a radioactive material that decays according to the function A(t)=A0e−0.0244t, where A0 is the initial amount present and A is the amount present at time t (in years). Assume that a scientist has a sample of 500 grams ofstrontium-90. (a) What is the decay rate of strontium-90? (b) How much strontium-90 is left after 40years? (c) When will only 300 grams of strontium-90 be left? (d) What is the half-life of strontium-90?arrow_forward
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