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Byju's Answer
Standard XII
Chemistry
Stoichiometric Calculations
Calculate the...
Question
Calculate the number of moles of electrons present in
54.6
g
of electrons.
(Take
N
A
=
6
×
10
23
)
A
5.0
×
10
5
mol
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B
2.0
×
10
4
mol
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C
1.0
×
10
5
mol
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D
1.0
×
10
4
mol
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Solution
The correct option is
C
1.0
×
10
5
mol
We know,
Mass of one electron
=
9.1
×
10
−
31
kg
So, mass of one mole of electron
=
9.1
×
10
−
31
×
6.022
×
10
23
kg
The number of moles in
54.6
×
10
−
3
kg
electron
=
54.6
×
10
−
3
9.1
×
10
−
31
×
6
×
10
23
mol
=
1.0
×
10
5
mol
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2
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Calculate the number of moles of electrons present in
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(Take
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