Determine the amount of mols in 1.50 X 10^23 atoms of Cl2.

0.249 moles

Explanation:

Given:

No. of atoms= 1.50 X 10^23 atoms

NA= 6.022 X 10^23 atoms

To Find:

Moles= ?

Solution:

Mole = No. of atoms/NA

= 1.50 X 10^23/6.022 X 10^23

= 0.249 moles

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.