Question

How many moles are in 3.86 x 1023 molecules of Carbon Dioxide (CO2)?

Answer 1

0.64 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{3.86 * {10}^(23) }{6.02 * {10}^(23) } = (3.86)/(6.02) \\ = 0.641196...`

We have the final answer as

0.64 moles

Hope this helps you