22. A piece of wood board contains approximately 6.76 X 1023 molecules of wood, C2H4920, how
many moles of wood does it contain?

Respuesta :

Answer:

1.23 moles

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

[tex]n = \frac{N}{L} \\[/tex]

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

[tex]n = \frac{6.76 \times {10}^{23} }{6.02 \times {10}^{23} } = \frac{6.76}{6.02} \\ = 1.22923...[/tex]

We have the final answer as

1.23 moles

Hope this helps you