1 Answer

Shiran Dror · Answer 1 · 2021-03-10T14:50:31+0000

Answer:

0.05 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

$n = \frac{3.01 * {10}^(22) }{6.02 * {10}^(23) } = (1)/(20) \\ = 0.05$

We have the final answer as

Hope this helps you