Name: _______________________________________
Period: ______
Date: ________
H2O
Step 1: Find the mass of
each element in the
formula using the periodic
table.
H=
Step 2: Find the number of
atoms of each element in
the chemical formula
H=
Step 3: Multiply the mass
times the number of atoms
to get the total mass from
each element.
H=
X =
O=
O=
O=
Step 2: Find the number of
atoms of each element in
the chemical formula
Step 3: Multiply the mass
times the number of atoms
to get the total mass from
each element.
=
X =
X
Step 4: Add all the
individual masses to find
the mass of the whole
chemical.
H2O =
=
C12H22O11
Step 1: Find the mass of
each element in the
formula using the periodic
table.
=
=
=
=
=
X
=
=
=
=
X
=
Step 4: Add all the
individual masses to find
the mass of the whole
chemical.
=
NaCl
Step 1: Find the mass of
each element in the
formula using the periodic
table.
=
=
Step 2: Find the number of
atoms of each element in
the chemical formula
=
=
Step 3: Multiply the mass
times the number of atoms
to get the total mass from
each element.
=
X =
=
X
Step 4: Add all the
individual masses to find
the mass of the whole
chemical.
=
=
NaHCO3
Step 1: Find the mass of
each element in the
formula using the periodic
table.
=
Step 2: Find the number of
atoms of each element in
the chemical formula
=
Step 3: Multiply the mass
times the number of atoms
to get the total mass from
each element.
=
X
=
=
=
=
X
=
=
=
=
X
=
=
=
=
X
=
Step 4: Add all the
individual masses to find
the mass of the whole
chemical.
=
Al2(SO4)3
Step 1: Find the mass of
each element in the
formula using the periodic
table.
Step 2: Find the number of
atoms of each element in
the chemical formula
Step 3: Multiply the mass
times the number of atoms
to get the total mass from
each element.
Step 4: Add all the
individual masses to find
the mass of the whole
chemical.
1. How many molecules are in 13.5 g of sulfur dioxide, SO2?
2. What is the mass of 2.23 x 1023 atoms of sulfur?
3. How many formula units of silver fluoride, AgF, are equal to 42.15 g of this substance?
4. What is the mass of 8.83 x 1023 formula units of Iron (III) oxide, Fe2O3?