What is the mass of 3.8 × 1024 atoms of argon (Ar)?
6.3g
avogadro’s constant / number of atoms
multiplied by Mr of argon
divide 3.8*10^24 atoms using 6.022×10^23 (big avogadro range) to get moles, then multiply using Argon’s MM to get grams…area B Divide one million sixty -twelve * 10^22 atoms using wide variety of avogadro to get moles.