30.
Listed below are the names of 10 compounds. First, write down the symbols for
each part of the compound. Then, label each part with its valence. Add subscripts
to make each molecule electrically neutral. The result is the formula for the
compound.
NAME
PARTS
FORMULA
a. Calcium bromide
________
________
b. Sodium carbonate
________
________
c.
Aluminum hydroxide
________
________
d. Calcium hydroxide
________
________
e. Barium hydroxide
________
________
f.
Potassium bromide
________
________
g. Silver chloride
________
________
h. Magnesium phosphate ________
________
i.
Sulfuric acid
________
________
j.
Sodium sulfide
________
________
31. The number of atoms of oxygen in H2SO4 is. ______. The number of atoms of
chlorine in NaCl is ___________. The number of atoms of iron in Fe2(SO4)3 is
______________. The number of atoms of sulfur in K2S is ________. The
number of atoms of oxygen in Al2(SO4)3 is ____________. The number of atoms
of hydrogen in (NH4)2SO4 is ____________.
MD0803
1-38