Answer:
32.52×10¹⁹ atoms
Explanation:
Given data:
Mass of gold = 0.106 g
Number of atoms of gold = ?
Solution:
We will calculate the number of moles first.
Number of moles = mass/molar mass
Number of moles = 0.106 g/ 197 g/mol
Number of moles = 5.4×10⁻⁴ mol
Number of atoms:
1 mole contain 6.022×10²³ atoms
5.4×10⁻⁴ mol × 6.022×10²³ atoms /1 mol
32.52×10¹⁹ atoms
