Question

22. A piece of wood board contains approximately 6.76 X 1023 molecules of wood, C2H4920, how

many moles of wood does it contain?

Answer 1

1.23 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{6.76 * {10}^(23) }{6.02 * {10}^(23) } = (6.76)/(6.02) \\ = 1.22923...`

We have the final answer as

1.23 moles

Hope this helps you