Question

Calculate the mass, in grams, of Avogadro's number of aluminum atoms.

Answer 1

Avogadro's number is the number of atoms, molecules, ions or any structural units in a mole of any substance. Therefore, we have 1 mol of aluminum atoms.

$n(Al) = 1 mol$

$m(Al)=n(Al)*M(Al)$

$m(Al)=1mol*27g/mol=27g$

The answer is 27 grams of aluminium atoms.