Question

-Particle Conversions
How many moles of Lithium are in 7.15 x 1024 atoms of Lithium?

Answer 1

The answer is 11.88 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{7.15 * {10}^(24) }{6.02 * {10}^(23) } \\ = 11.87707641...`

We have the final answer as

11.88 moles

Hope this helps you