1.

Number of atoms in 558.5g Fe (at.wt of Fe=55.85gmol−1) is

Answer»

Given that,
1 MOLE of FE has mass = 55.85 g
Then,
55.85 g of Fe = 1 mole of Fe
=6.022 x 10²³ ATOMS of Fe
558.5g contains =6.022 x 10²³/55.85 x 558.5
=6.022 x 10²⁴ atoms of Fe.

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