Answer:
The answer is
14.12 moles
Explanation:
To find the number of moles of an element given the number of entities in the element we use the formula
[tex]n = \frac{N}{L} \\[/tex]
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question
N = 8.5 × 10²⁴ atoms of copper
We have
[tex]n = \frac{8.5 \times {10}^{24} }{6.02 \times {10}^{23} } \\ = 14.11960132...[/tex]
We have the final answer as
14.12 moles
Hope this helps you
