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Author Question: The pH of a 0.25 M aqueous solution of hydrofluoric acid, HF, at 25.0 C is 2.03. What is the value ... (Read 75 times)

Hungry!

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on: Aug 27, 2018
The pH of a 0.25 M aqueous solution of hydrofluoric acid, HF, at 25.0 C is 2.03. What is the value of Ka for HF?
 
  A) 2.0  10-9
  B) 1.1  10-9
  C) 6.0  10-5
  D) 3.5  10-4
  E) none of the above

Question 2

What is the electron configuration for the Co2+ ion?
 
  A) Ar4s13d6
  B) Ar3d7
  C) Ar3d5
  D) Ar4s23d9
  E) Ne3s23p10

Question 3

The balanced half-reaction in which dichromate ion is reduced to chromium metal is a ________ process.
 
  A) two-electron
  B) six-electron
  C) three-electron
  D) four-electron
  E) twelve-electron
Chemistry: The Central Science ¦ Brown, LeMay, Bursten ¦ 14th Edition
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shoemake

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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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Hungry!

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Reply 2 on: Aug 27, 2018
YES! Correct, THANKS for helping me on my review

yeungji

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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