The number of atoms in Fe

CHEMISTRY · Single correct · A Level · Chemistry · Amount of substance · Amount of substance

Problem

The number of atoms in 55.85 g55.85\,\text{g} Fe, where the atomic mass of Fe is 55.85 g mol−155.85\,\text{g}\,\text{mol}^{-1}, is: (1) Twice that in 60 g60\,\text{g} carbon (2) 6.023×10226.023\times10^{22} (3) 6.023×10236.023\times10^{23} (4) 55.85×6.023×102355.85\times6.023\times10^{23}

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