All of the following solvents are no longer widely used as ...

[imanialler]

All of the following solvents are no longer widely used as solvents for nonpolar organic compounds EXCEPT
 
  A) benzene.
  B) methylene chloride.
  C) supercritical carbon dioxide (scCO2).
  D) perchloroethylene.

Question 2

The charge on the nucleus of a sodium atom is
 
  A) 1+.
  B) 23+.
  C) 11+.
  D) 0.

Question 3

The pH of an aqueous solution is 9.35. What is the pOH? (pH + pOH = 14 for aqueous acid/base systems).
 
  A) 4.65
  B) 0.971
  C) -4.65
  D) 0.668

Question 4

An iron oxide is 72.4 in iron. Its empirical formula is ________.
 
  A) FeO
  B) Fe2O
  C) Fe2O3
  D) Fe3O4

[HandsomeMarc]

Answer to Question 1

C

Answer to Question 2

C

Answer to Question 3

A

Answer to Question 4

D

[imanialler]

Excellent

[Kedrick2014]

Gracias!