Question

How many moles of chlorine are in a sample containing 4.5×10^14 chlorine atoms?

Answer 1

`\huge{7.475 * {10}^( - 10) \: \: 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

N = 4.5×10^14 chlorine atoms

We have

`n = \frac{4.5 * {10}^(14) }{6.02 * {10}^(23) } = 7.475 * {10}^( - 10) \\`

We have the final answer as

`7.475 * {10}^( - 10) \: \: moles`

Hope this helps you