How many mole are in 5.25 × 10²⁵ atoms of Au

Explanation:

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

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

We have the final answer as

Hope this helps you

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock