Question

A ring made of pure gold contains 5.29 x 1022 atoms. How many moles are in the ring?

Answer 1

Answer:

0.088 moles

Explanation:

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

$n = \frac{N}{L}$

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

$n = \frac{5.29 \times {10}^{22} }{6.02 \times {10}^{23} } \\ = 0.087873...$

We have the final answer as

0.088 moles

Hope this helps you