21.077 × 10²¹ silver atoms are there in 3.86 g of silver.
Number of atoms = Number of moles × Avogadro's Number
Avogadro's number is the number of particles in one mole of substance. 6.022 × 10²³ is known as Avogadro's constant / Avogadro's number.
Avogadro's Number = 6.022 × 10²³
To calculate the number of moles of a substance we have to divide the given mass/weight of the substance by the molar mass of the substance.
Number of moles = [tex]\frac{\text{Given mass}}{\text{Molar mass}}[/tex]
= [tex]\frac{3.86\ g}{107.87\ g/mol}[/tex]
= 0.035 mol
Now put the value of number of moles in above formula, we get
Number of atoms = Number of moles × Avogadro's Number
= 0.035 × 6.022 × 10²³
= 0.21077 × 10²³
= 21.077 × 10²¹
Thus, from the above conclusion we can say that 21.077 × 10²¹ silver atoms are there in 3.86 g of silver.
Learn more about the Avogadro's Number here: https://brainly.com/question/1513182
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