Question

the number of atoms in 7.4 moles of iron ore with the explanation ​

Answer 1

Answer:

We know that One Mole of Iron contains : 6.023 × 10²³ Atoms of Iron

⇒ 7.4 Moles of Iron contains : 7.4 × 6.023 × 10²³ Atoms of Iron

⇒ 7.4 Moles of Iron contains : 4.45702 × 10²⁴ Atoms of Iron

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Answer 2

Answer:

223 × 10^23 atoms

Explanation:

molecular mas of iron ore(fe2o3) = 160g

atomicity = 5

n(mole). = 7.4

no.of atoms = mole × Avogadro's number × atomicity

no.of moles = 7.4 × N × 5

= 37 N

= 37 × 6.023 × 10^23

= 222.851 × 10^23

~ 223 × 10^23 atoms

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