Use the following choices to indicate the charge on the multivalent metal whose
symbol is underlined in the given formulas.
(A) 1+
(B) 2+
(C) 3+
(D) 4+
(E) 5+
Fe 2 S 3
PbO
PbO 2
CuCl 2
Sn 3 N 4
Find the percentage of sulfur in H 2 SO 4.
What are the empirical formula and the true formula of a compound
composed of 85.7% C and 14.3% H with a true formula mass of 42?
Directions:
Every question below contains two statements, I in the left-hand column and
II in the right-hand column. For each question, decide if statement I is true or
false and whether statement II is true or false, and fill in the corresponding T
or F ovals in the answer spaces. *Fill in oval CE only if statement II is a
correct explanation of statement I.I II
18. The compound HF dissolved in water is
called hydrofluoric acidBECAUSEthe prefix hydro- indicates that a
hydrogen compound is dissolved in
water.19. Net ionic equations must include spectator
ionsBECAUSE
net ionic equations must be balanced.20. Balanced equations have the same number^
the conservation of matter must apply