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Author Question: What was the original mass of a cobalt-60 sample that decayed for 100 years to a mass of 0.0259 g? ... (Read 61 times)

biggirl4568

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on: Mar 21, 2021

Question 1

What is the half-life of manganese-52 if a 1.50 g sample decays to 0.0469 g in 28 days?

◦ 5.6 days
◦ *

Question 2

What was the original mass of a cobalt-60 sample that decayed for 100 years to a mass of 0.0259 g? The half-life of cobalt-60 is 5.27 years.

◦ 1.33×104 g
◦ *
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Marked as best answer by biggirl4568 on Mar 21, 2021

dlook33

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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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biggirl4568

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Reply 2 on: Mar 21, 2021
Excellent

juliaf

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Reply 3 on: Yesterday
:D TYSM

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