Answer:
5 moles Au
Step-by-step explanation:
To convert atoms to moles, simply divide the given number of moles by Avogadro's number , ( 6.022 * 10^23 )
Given number of atoms of Au : 3.0 x 10^24
Number of moles : 3.0 x 10^24 / 6.022 x 10^23 = 5 moles ( rounded )