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Answer:
The average mass of one atom of arsenic is 74.92 amu, and the mass of one mole of arsenic atoms is 74.92 grams.
The mass of one mole of arsenic atoms is 74.92 grams.
Calculation,
Mass of one mole of arsenic = Mass of 1 arsenic atom × [tex]N_{A}[/tex]
Where, [tex]N_{A}[/tex] = Avogadro's number = 6.022 × [tex]10^{23}[/tex]
Mass of one arsenic atom = 74.921 u
One u = 1.66 × [tex]10^{-27}[/tex] kg
And,
Mass of one mole of arsenic atom = 6.022 ×[tex]10^{23}[/tex] × 74.921 × 1.66 × [tex]10^{-27}[/tex]×[tex]10^{3}[/tex] kg
Mass of one mole of arsenic atom = 74.92 [tex]gmol^{-1}[/tex]
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