Question

If have .106g of Gold, how many atoms of Gold do you have?

Answer 1

32.52×10¹⁹ atoms

Step-by-step 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