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Radioactive decay is characterized by the equation In (№) = where No is the initial amount, N, is the amount remaining at time t, and k is the rate constant. The half-life (t1/2) is the time required for the number of radioactive nuclei in a sample o drop to half of its initial value. It is defined as t1/2 = In 2 where k is the decay constant. = -kt Figure Beta decay P-32 S-32 1 of 1 > Part A Phosphorus-32 () decays by beta emission to form sulfur-32 (C). How many half-lives have passed in the reaction shown here? (Eigure 1) Express your answer as an integer. View Available Hint(s) Submit ▼ Part B The half-life of phosphorus-32 is 14.26 days. Calculate its decay constant. Express the decay constant numerically in inverse days. View Available Hint(s) k= Submit |Π| ΑΣΦ C F ? Review days ¹

Radioactive decay is characterized by the equation In (№) = where No is the initial amount, N, is the amount remaining at time t, and k is the rate constant. The half-life (t1/2) is the time required for the number of radioactive nuclei in a sample o drop to half of its initial value. It is defined as t1/2 = In 2 where k is the decay constant. = -kt Figure Beta decay P-32 S-32 1 of 1 > Part A Phosphorus-32 () decays by beta emission to form sulfur-32 (C). How many half-lives have passed in the reaction shown here? (Eigure 1) Express your answer as an integer. View Available Hint(s) Submit ▼ Part B The half-life of phosphorus-32 is 14.26 days. Calculate its decay constant. Express the decay constant numerically in inverse days. View Available Hint(s) k= Submit |Π| ΑΣΦ C F ? Review days ¹

Chemistry: An Atoms First Approach
Chemistry: An Atoms First Approach
2nd Edition
ISBN:9781305079243
Author:Steven S. Zumdahl, Susan A. Zumdahl
Publisher:Steven S. Zumdahl, Susan A. Zumdahl
Chapter18: The Nucleus: A Chemist's View
Section: Chapter Questions
Problem 28E
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Radioactive decay is characterized by the equation In = -kt where No is the initial amount, N, is the amount remaining at time t, and k is the rate constant. The half-life (t1/2) is the time required for the number of radioactive nuclei in a sample to drop to half of its initial value. It is defined as t1/2 = = In 2 where k is the decay constant. Figure Beta decay P-32 S-32 1 of 1 > ▼ Part A Phosphorus-32 () decays by beta emission to form sulfur-32 (C). How many half-lives have passed in the reaction shown here? (Figure 1) Express your answer as an integer. ▸ View Available Hint(s) Submit Part B The half-life of phosphorus-32 is 14.26 days. Calculate i decay constant. Express the decay constant numerically in inverse days. View Available Hint(s) k= [Π| ΑΣΦ Submit Part C Complete previous part(s) 1 Review I Cons days-1
Transcribed Image Text:Radioactive decay is characterized by the equation In = -kt where No is the initial amount, N, is the amount remaining at time t, and k is the rate constant. The half-life (t1/2) is the time required for the number of radioactive nuclei in a sample to drop to half of its initial value. It is defined as t1/2 = = In 2 where k is the decay constant. Figure Beta decay P-32 S-32 1 of 1 > ▼ Part A Phosphorus-32 () decays by beta emission to form sulfur-32 (C). How many half-lives have passed in the reaction shown here? (Figure 1) Express your answer as an integer. ▸ View Available Hint(s) Submit Part B The half-life of phosphorus-32 is 14.26 days. Calculate i decay constant. Express the decay constant numerically in inverse days. View Available Hint(s) k= [Π| ΑΣΦ Submit Part C Complete previous part(s) 1 Review I Cons days-1
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