Question

How many moles are equal to 2.13x1024 atoms of aluminum?

Answer 1

3.54

^^^she is correct^^^

Answer 2

The answer is 3.54 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{2.13 * {10}^(24) }{6.02 * {10}^(23) } \\ = 3.53820598...`

We have the final answer as

3.54 moles

Hope this helps you