Homework Clinic
Science Clinic => Chemistry => Topic started by: imanialler on Aug 27, 2018
-
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
-
Answer to Question 1
C
Answer to Question 2
C
Answer to Question 3
A
Answer to Question 4
D