Number of atoms in 558.5 gram Fe (at. wt. of Fe = 55.85 g mol-1) is

Question

Number of atoms in 558.5 gram Fe (at. wt. of Fe = 55.85 g mol^-1) is

twice that in 60 g carbon

6.023 $\times$ 10²²

half that in 8 g He

558.5 $\times$ 6.023 $\times$ 10²³

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