Express 2 mole of nitrogen in different ways
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Answer:
You know that one molecule of nitrogen gas,
N
2
, contains two atoms of nitrogen,
2
×
N
.
Now, a mole is simply a very, very large collection of particles. In order to have one mole of things, let's say particles, you need to have
6.022
⋅
10
23
particles
→
this is known as Avogadro's constant and acts as the definition of the mole.
So, in one mole of nitrogen gas you have
6.022
⋅
10
23
molecules of nitrogen gas,
N
2
. But since each individual molecule consists of
2
atoms of nitrogen, the number of moles of nitrogen atoms will be twice that of nitrogen gas molecules.
6.022
⋅
10
23
molecules N
2
⋅
2
a
atoms of N
1
molecule N
2
=
1.2044
⋅
10
24
taoms of N
Alternatively, you can express this as
2
×
N
A
, where
N
A
is Avogadro's constant..
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