convert the mass of 1.5 moles of ethanol
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Explanation:
Use the formula
n
=
m
M
where
n
is the amount in moles (
m
o
l
),
m
is the mass in grams (
g
), and
M
is the molar mass in grams per mole (
g
m
o
l
−
1
).
To find the molar mass of ethanol:
There are 2
C
atoms (molar mass
12.011
g
m
o
l
−
1
),
6
H
atoms (molar mass
1.008
g
m
o
l
−
1
),
and 1
O
atom (molar mass
15.999
g
m
o
l
−
1
)
(
2
×
12.011
)
+
(
6
×
1.008
)
+
(
1
×
15.999
)
=
46.261176
g
m
o
l
−
1
To find the amount of ethanol:
n
(
C
H
3
C
H
2
O
H
)
=
1.5
g
46.261176
g
m
o
l
−
1
=
3.242459724759267
m
o
l
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