Answer:
Since the atomic mass of nitrogen is 14, a 4 gram atom of nitrogen is equivalent to:
4 g ÷ 14 g/mol = 0.286 mol
Multiplying the number of moles by Avogadro's constant (6.022 x 10^23 molecules/mol):
0.286 mol × 6.022 x 10^23 molecules/mol = 1.72 x 10^23 molecules
So, 4 grams of nitrogen will have approximately 1.72 x 10^23 molecules.
