**Statement-1:** 1 mole of and 1 mole of contain same number of molecules. <br>**Statement-2:** 1 mo — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question

💡 Solution & Explanation

By definition, 1 mole of any molecular substance contains Avogadro's number ($N_A$) of molecules. Both $O_2$ and $O_3$ are molecular, so 1 mole of each contains $N_A$ molecules. [1]