How many moles are present in 2.3 x 1023 molecules of NH3?

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

the awnser is group 12

answer carbon and three oxygen atoms;