What is the mass of :) 4 moles of aluminium atoms (Atomic mass of aluminium = 27) ?

Explanation

Number (n) of moles = 4
Molar mass (M) of aluminium ions =27 g (Mass of an ion is same as that of mass of an atom of same element )
Mass = Molar mass `xx` Number of moles
`implies m = M xx n`
`implies m = 27 xx 4 = 108 g`