Question

1) How many moles are in 4.0x10^24 atoms?

Answer 1

6.64 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{4 * {10}^(24) }{6.02 * {10}^(23) } \\ = 6.644518...`

We have the final answer as

6.64 moles

Hope this helps you