We know, 1 mole = 6.022 × 10²³

Now, to calculate mass, apply the formula:

We can write:

Mass(m) = Number of moles (n) × Molar mass of N₂ (M)

Mass = 1 mol × 28g/mol

Mass = 28g

Thus, the mass of 6.022 × 10²³ atoms of nitrogen is 28g