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Author Question: The number of half-lives needed for a radioactive element to decay to about 6% of its original ... (Read 91 times)

wrbasek0

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on: Mar 21, 2021

Question 1

The number of a certain radioactive nuclide present in a sample decays from 160. to 20. in 41 minutes. What is the half-life of this radioactive species?

◦ 9 minutes
◦ 14 minutes
◦ 19 minutes
◦ 24 minutes
◦ 29 minutes

Question 2

The number of half-lives needed for a radioactive element to decay to about 6% of its original activity is (choose nearest number):

◦ 2
◦ 3
◦ 4
◦ 5
◦ 6
Chemistry: An Atoms First Approach ¦ Zumdahl, DeCoste ¦ 3rd Edition
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Marked as best answer by wrbasek0 on Mar 21, 2021

aruss1303

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Reply #1 on: Mar 21, 2021
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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wrbasek0

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Reply 2 on: Mar 21, 2021
:D TYSM

cpetit11

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Reply 3 on: Yesterday
Gracias!

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