Question

7. How many moles are in 18.00 x 1023 particles of AICIZ?

A. 2.99 moles
B. 11.98 x 1023 moles
C. 24.02 moles
D. 108.36 x 1023 moles

Answer 1

The answer is option A

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{18.0 * {10}^(23) }{6.02 * {10}^(23) } = (18)/(6.02) \\ = 2.99003322...`

We have the final answer as

2.99 moles

Hope this helps you