1 Answer

Eh Jewel · Answer 1 · 2021-08-20T22:24:30+0000

Answer:

1.38 moles

Step-by-step explanation:

To find the number of moles in a substance given it's number of entities 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 we have

$n = \frac{8.30 * {10}^(23) }{6.02 * {10}^(23) } = (8.30)/(6.02) \\ = 1.3787 37...$

We have the final answer as

Hope this helps you