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Author Question: A newly synthesized element is found to have a half-life of 3.82 minutes. How long after its ... (Read 72 times)

CBme

  • Hero Member
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  • Posts: 548
on: Jul 8, 2021

Question 1

A freshly prepared sample of curium-243 undergoes 3312 disintegrations per second. After 6.00 y., the activity of the sample declines to 2755 disintegrations per second. The of is
◦ 4.99
◦ 32.6
◦ 7.21
◦ 0.765
◦ 22.6

Question 2

A newly synthesized element is found to have a half-life of 3.82 minutes. How long after its formation will the activity be only 10% of original activity?
◦ 12.1 min
◦ 6.03 min
◦ 0.603 min
◦ 12.7 min
◦ 1.27 min
General Chemistry: Principles and Modern Applications ¦ Petrucci, Herring, Madura, Bissonnette ¦ 11th Edition
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Marked as best answer by CBme on Jul 8, 2021

jaymee143

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Reply #1 on: Jul 8, 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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CBme

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Reply 2 on: Jul 8, 2021
Thanks for the timely response, appreciate it

brbarasa

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Reply 3 on: Yesterday
Gracias!

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