The formula for number of moles is :
[tex]number of moles = \frac{mass of an element}{atomic mass of the element}[/tex] -(1)
The atomic mass of tungsten = [tex]183.84 amu[/tex] (given)
Number of atoms of tungsten = 1
Since, 1 mol = [tex]6.022\times 10^{23} atoms[/tex]
So, number of moles of tungsten = [tex]\frac{1}{6.022\times 10^{23}}mol[/tex]
Rearranging the formula (1) as:
[tex]mass of an element = number of moles\times atomic mass of the element[/tex]
Substituting the values:
[tex]mass of an element = \frac{1}{6.022\times 10^{23}}\times 183.84[/tex]
[tex]mass of an element ={30.53\times 10^{-23}} g[/tex]
Hence, the mass of a single tungsten atom (mw = 183.84 amu ) is [tex]30.53\times 10^{-23}} g[/tex].
