Chemistry
Determining a Molecular Formula from a Diagram:
Molecules are sometimes represented as “ball and stick” models.
In all of these representations, carbon atoms are black or gray; hydrogen atoms are white; oxygen atoms are red, and nitrogen atoms are blue. Those atoms are the ones that we will most commonly encounter. But sometimes, there will be other atoms. For example, in this problem set, sulfur is shown in yellow, and phosphorous is shown in orange.
Here are two molecules that are similar in structure. The molecule on the left has the molecular formula C2H5NO. The molecule on the right is similar, but the red sphere for oxygen is replaced by a yellow sphere for sulfur; thus, its molecular formula is C2H5NS.
Determine the molecular formulas for the four molecules shown below.
1.
2.
3. The yellow sphere is sulfur.
4. The orange sphere is phosphorous.
Determining a Molecular Formula from a Diagram:
Molec
ules are sometimes represented as
“
ball and
stick
”
models.
In all of these representations, c
arbon atoms are black
or gray
; hydrogen atoms are white; oxygen atoms
are red, and nitrogen atoms
are blue.
Tho
se atoms are the ones that w
e
will most comm
only encounter.
But s
ometimes, there
will be other a
toms. For example, in this problem set, sulfur is show
n in
yellow,
and phosphorous is
shown in orange.
He
re are two molecules that are
similar
in structure.
The molecule on the left
has
the
molecular
formula
C
2
H
5
NO.
T
he molecu
le on the right
is
sim
ilar, but the red
sphere for
oxy
gen is replaced by a yellow
sphere for
sulfur;
thus, it
s
mole
cular f
ormula
is C
2
H
5
NS.
Determine the molecula
r formulas for
the four molecules shown below.
1.
Determining a Molecular Formula from a Diagram:
Molecules are sometimes represented as “ball and stick” models.
In all of these representations, carbon atoms are black or gray; hydrogen atoms are white; oxygen atoms
are red, and nitrogen atoms are blue. Those atoms are the ones that we will most commonly encounter.
But sometimes, there will be other atoms. For example, in this problem set, sulfur is shown in yellow,
and phosphorous is shown in orange.
Here are two molecules that are similar in structure. The molecule on the left has the molecular formula
C
2
H
5
NO. The molecule on the right is similar, but the red sphere for oxygen is replaced by a yellow
sphere for sulfur; thus, its molecular formula is C
2
H
5
NS.
Determine the molecular formulas for the four molecules shown below.
1.
