Answer:
8.45 × 10⁻²⁰ g
Explanation:
Step 1: Given data
- Number of atoms of Fe (N): 912 atoms
- Molar mass of Fe (M): 55.85 g/mol
Step 2: Calculate the mass, in grams, of 1 atom of Fe
We will use Avogadro's number: there are 6.02 × 10²³ atoms of Fe in 1 mole of Fe.
55.85 g/mol × 1 mol/6.02 × 10²³ atom = 9.27 × 10⁻²³ g/atom
Step 3: Calculate the mass corresponding to 912 atoms
9.27 × 10⁻²³ g/atom × 912 atom = 8.45 × 10⁻²⁰ g
