How many moles of ar are in 1.27x10^24 ar atoms?
1 mole Ar ------------- 6.02x10²³ atoms?? moles Ar ---------- 1.27x10²⁴ atoms1.27x10²⁴ x 1 / 6.02x10²³ => 2.109 moles of Arhope this helps!
