## Chemistry: The Molecular Science (5th Edition)

1 mol $iron$ has the greater mass.
- 1 mol $iron$: Molar mass $(Fe)$: 55.8g/mol Therefore: 1 mol ($Fe$) = 55.8 g - 1 mol $aluminium$: Molar mass ($Al$) = 27.0 g/mol Therefore: 1 mol $Al$ = 27.0g 55.8 g > 27.0 g, so 1 mol of $iron$ has the greater mass.