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Author Question: A pure sample of 226Ra contains 2.0 1014 atoms of the isotope. If the half-life of 226Ra = 1.6 103 ... (Read 91 times)

Yolanda

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on: Aug 10, 2020

Question 1

Which of the following refer to the basic categories associated with the energy of a single molecule in a gaseous phase?

◦
nuclear, electronic, interval

◦
electronic, translation, rotation, vibration

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ionic, covalent, hydrogen, Van der Waals

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translation, rotation, vibration

◦
dipole-dipole, covalent, ionic, translation


Question 2

A pure sample of 226Ra contains 2.0 × 1014 atoms of the isotope. If the half-life of 226Ra = 1.6 × 103 years, what is the decay rate of this sample? (1 Ci = 3.7 × 1010 decays/s)
Physics for Scientists and Engineers ¦ Serway, Jewett ¦ 9th Edition
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Marked as best answer by Yolanda on Aug 10, 2020

14vl19

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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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Yolanda

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Reply 2 on: Aug 10, 2020
:D TYSM

nyrave

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Reply 3 on: Yesterday
Excellent

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