Question

Plain how to calculate the number of atoms in 31.1 g of Au.

Answer 1

See Below

Step-by-step explanation:

mole weight of Au ( gold) = 196.97 gm

31.1 / 196.97 = number of moles of Au

Number of moles * Avagadro's Number = number of atoms

31.1 / 196.97 * 6.022 x 10^23 = 9.508 x 10^22 atoms