Answer:
1.51 × 10²³ atoms
Explanation:
First, we convert 14g of iron (Fe) to moles using the formula below:
mole = mass ÷ molar mass
Molar mass of Fe = 55.85g/mol
mole = 14g ÷ 55.85g/mol
mole = 0.251mol
The number of atoms in 0.251 mol of Fe is calculated as follows:
number of atoms = n × nA
Where;
n = number of moles
nA = Avagadros number (6.02 × 10²³)
number of atoms = 0.251 × 6.02 × 10²³
number of atoms = 1.51 × 10²³ atoms.
