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Author Question: The frequency of electromagnetic radiation required to promote an electron from n = 2 to n = 4 in a ... (Read 96 times)

Caiter2013

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on: Aug 27, 2018
The frequency of electromagnetic radiation required to promote an electron from n = 2 to n = 4 in a Bohr hydrogen atom is ________ Hz.
 
  A) 4.13  10-19
  B) 6.17  1014
  C) 5.46  10-19
  D) 8.22  1014
  E) 4.13  1019

Question 2

To produce acceptable quality drinking water from seawater by desalination, the level of salt must be reduced ________ fold.
 
  A) 10
  B) 50
  C) 70
  D) 100
  E) 120
Chemistry: The Central Science ¦ Brown, LeMay, Bursten ¦ 14th Edition
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Melissahxx

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Reply #1 on: Aug 27, 2018
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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Caiter2013

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Reply 2 on: Aug 27, 2018
Great answer, keep it coming :)

essyface1

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Reply 3 on: Yesterday
Gracias!

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