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Standard IX
Chemistry
Molecular Mass
Question
Molar mass of ethanol
(
C
2
H
5
O
H
)
is:
(Atomic masses: C = 12 u, H = 1 u, O = 16 u)
46
45.1
34
38.9
62.1
A
38.9
B
46
C
34
D
45.1
E
62.1
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Solution
Verified by Toppr
Molar mass of ethanol (
C
2
H
5
O
H
)
=
(
2
×
a
t
o
m
i
c
m
a
s
s
o
f
c
a
r
b
o
n
)
+
(
6
×
a
t
o
m
i
c
m
a
s
s
o
f
h
y
d
r
o
g
e
n
)
+
(
1
×
a
t
o
m
i
c
m
a
s
s
o
x
y
g
e
n
)
=
2
(
12
)
+
6
(
1
)
+
1
(
16
)
=
46
g
/
m
o
l
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Molar mass of ethanol
(
C
2
H
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O
H
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is:
(Atomic masses: C = 12 u, H = 1 u, O = 16 u)
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