Which of the following have the same number of atoms? — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question

💡 Solution & Explanation

Atoms in 1 mol $CO_2 = 1 \times 3 \times N_A = 3 N_A$. <br>Atoms in 1.5 mol $O_2 = 1.5 \times 2 \times N_A = 3 N_A$. <br>Atoms in 1 mol $O_3 = 1 \times 3 \times N_A = 3 N_A$. <br>Atoms in 3 mol $He = 3 \times 1 \times N_A = 3 N_A$.