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Author Question: Which metal is not required to have its charge specified in the names of ionic compounds it forms? ... (Read 109 times)

madam-professor

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Which metal is not required to have its charge specified in the names of ionic compounds it forms?
 
  A) Cr
  B) Ni
  C) Zr
  D) Na
  E) Mo

Question 2

What is the coefficient of the dichromate ion when the following equation is balanced? Fe2+ + Cr2O72-  Fe3+ + Cr3+ (acidic solution)
 
  A) 1
  B) 2
  C) 3
  D) 5
  E) 6

Question 3

How does lime reduce sulfur dioxide emissions from the burning of coal?
 
  A) It reacts with the sulfur dioxide to form calcium sulfite solid that can be precipitated.
  B) It reduces the sulfur dioxide to elemental sulfur that is harmless to the environment.
  C) It oxidizes the sulfur dioxide to tetrathionate that is highly water soluble so it can be scrubbed from the emission gases.
  D) It catalyzes the conversion of sulfur dioxide to sulfur trioxide which is much less volatile and can be removed by condensation.
  E) It converts SO2 to solid, elemental sulfur.


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tranoy

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