Answer :

abelxoconda

The elementary unit in the case of Fe2O3 has 2 atoms of iron and 3 atoms of oxygen. 6 moles of Fe2O3 have 6*2*6.022*10^23 atoms of iron. This is equal to 72.264*10^23 atoms of iron. One mole is an elementary unit of measurement.

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Eduard22sly

There are 1.806×10²⁴ atoms in 3 moles of iron.

Explanation:

Step 1:

Data obtained from the question

Number of mole of Fe = 3 moles

Number of atom =?

Step 2:

Determination of the number of atom.

From Avogadro's hypothesis, we understood that:

1 mole of Fe = 6.02×10²³ atoms

Therefore,

3 moles of Fe = 3 × 6.02×10²³ atoms

3 moles of Fe = 1.806×10²⁴ atoms

Thus, 3 moles of iron, Fe contains 1.806×10²⁴ atoms.

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