For each compound below, count the TOTAL number of atoms.
Remember:
the subscripts tell you how many of each atom are in the compound. If there is NO subscript, it is understood to be 1.
a chemical symbol will have 1 or 2 letters. The first letter is always uppercase, and the second letter will be lower case.
if a polyatomic ion is in parentheses, the number outside the parentheses will distribute to all atoms inside the parentheses. For example: In the compound, Fe2(CO3)3 - There are 2 Fe atoms, 3 (3x1) C atoms, and 9 O (3 x 3) atoms.
NaOH
a.3 total atoms.
b.2 total atoms.
c.4 total atoms.
d.10 total atoms.
e.5 total atoms.
f.13 total atoms.
g.7 total atoms.
h.6 total atoms.
The correct answer is:
h. 6 total atoms.