Question

A sample of copper is known to contain 3.01 x 1023 atoms. How many mols of

copper does this represent?

Answer 1

0.5 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{3.01 * {10}^(23) }{6.02 * {10}^(23) } = (1)/(2) \\ = 0.5`

We have the final answer as

0.5 moles

Hope this helps you