1 Answer

Andre Albert · Answer 1 · 2021-06-10T20:29:48+0000

Answer:

The answer is

14.12 moles

Step-by-step explanation:

To find the number of moles of an element given the number of entities in the element we use the formula

$n = (N)/(L) \\$

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

$n = \frac{8.5 * {10}^(24) }{6.02 * {10}^(23) } \\ = 14.11960132...$

We have the final answer as

Hope this helps you