Answered

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Calculate the mass, in grams, of 912 atoms of iron, Fe (1 mol of Fe
has a mass of 55.85 g).

Sagot :

dsdrajlin

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

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