Question

Calculate the mass of 4 moles of aluminium atoms.

(Atomic mass of aluminium=27u)​

Answer 1

Answer:

Mass of 1 mole of Aluminium atoms i.e. the molar mass of aluminium is 27 g.

So, the mass of 4 moles of Aluminium atoms will be (4 x 27) g = 108 g

Answer 2

Answer:

the mass of 4 moles of aluminium atoms = 4 × atomic mass of aluminium atom

= 4 × 27

= 108u