Calculating the Number of Atoms in One Cubic Centimeter of Gold How many 1.0cm Atomic weight of gold moles of gold? 1.0 cm 197.0 g mole 1.0cm 19.28g 19.28g =0.09786 moles 197.0 g mole There are approx. How many 5.9 x1022 atoms gold atoms? in 1 cm3 of gold NA=6.022 x 1023 atoms mole (0.09786 moles)x(6.022×1023 atoms/mole)=5.893x1022 atoms1.0 cm 1.0 cm 1.0 cm 19.28 g NA = 6.022 x 1023 atoms / mole Atomic weight of gold = 197.0 g / mole How many moles of gold? 19.28 g 197.0 g / mole = 0.09786 moles How many gold atoms? (0.09786 moles)x(6.022 x 1023 atoms / mole)=5.893 x1022 atoms There are approx. 5.9 x1022 atoms in 1 cm3 of gold Calculating the Number of Atoms in One Cubic Centimeter of Gold I-7