Knowing the mass of the ma atom, it is possible to calculate the number of atoms in any mass of matter.
If
N The number of atoms of a certain substance,
М The mass of this substance, Kg
М Atomic mass,
Then, since N = m/ma, we get
N
=
М
М
⋅
1
Oh
.
E
.
M
.
=
М
М
⋅
1.66057
⋅
10
-
27
Kg
(1)
N=
M⋅1a.e.m.
М
=
M⋅1.66057⋅10
-27
Kg
М
(
