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Byju's Answer
Standard XII
Chemistry
Bohr's Model of a Hydrogen Atom
Find the mola...
Question
Find the molar mass oh aluminium oxide
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Solution
Dear student,
Aluminium oxide is Al
2
O
3
Its molar mass is( 2 x 27+ 3 x 16)g/mol
= 102 g/mol
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Similar questions
Q.
Find the mass of
1.5055
×
10
25
number of molecule of aluminium oxide.
Q.
Find the number of aluminium ions present in
0.051
g
of aluminium oxide
(
A
l
2
O
3
)
.
(Atomic mass :
A
l
= 27 amu ;
O
= 16 amu)
Q.
Calculate the number of aluminium ions present in
0.051
g of aluminium oxide. (Atomic mass of aluminium=
27
u
)
Q.
The mass of
A
l
(
O
H
)
3
that was obtained by the reaction of 133.4 g of
A
l
C
l
3
with 40 g of
N
a
O
H
according to following equation is 13 g.
A
l
C
l
3
+
N
a
O
H
→
A
l
(
O
H
)
3
+
N
a
C
l
(not balanced)
Calculate the percentage yield.
(Molar mass of aluminium chloride is 133.34 g/mol, molar mass of
N
a
O
H
is 40 g/mol and molar mass of aluminium hydroxde is 78 g/ mol respectively)
Q.
The formula of Aluminium oxide is
A
l
2
O
3
. Find the valencies of Aluminium and Oxygen.
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