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Author Question: The isotope, tritium, has a half-life of 12.3 years. Assume we have 10 kg of the substance. What ... (Read 79 times)

s.tung

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on: Aug 10, 2020

Question 1

The half-life of 131I is 8.04 days. Three days after it was prepared, its activity was 0.50 μCi. How many curies (in μCi) were initially prepared?

◦
.60

◦
.70

◦
.65

◦
.55

◦
.39


Question 2

The isotope, tritium, has a half-life of 12.3 years. Assume we have 10 kg of the substance. What will be the disintegration constant (in s−1)?

◦
5.6 × 10−2

◦
5.6 × 108

◦
3.2 × 107

◦
1.8 × 10−9

◦
1.6 × 106
Physics for Scientists and Engineers ¦ Serway, Jewett ¦ 9th Edition
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Marked as best answer by s.tung on Aug 10, 2020

Li Jun

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Reply #1 on: Aug 10, 2020
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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s.tung

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Reply 2 on: Aug 10, 2020
:D TYSM

matt95

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Reply 3 on: Yesterday
Excellent

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