Question

How many moles contain 9.15 x 1022 atoms of Ag?

Select the correct response.
0.152 mol
9.15 mol
0.325 mol
5.51 mol

Answer 1

0.152 mol

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{9.15 * {10}^(22) }{6.02 * {10}^(23) } \\ = 0.151993...`

We have the final answer as

0.152 moles

Hope this helps you