Question

Determine the number of atoms in 4.60 g gold.

Answer 1

N(Au) = 1,20 × 10²²

Step-by-step explanation:

1) n(Au) = m ÷ M = 4.60 g ÷ 197 g/mol = 0,02 mol

2) N(Au) = n(Au) × N(a) = 0,02 × 6.02*10²³ = 1,20 × 10²²