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

💡 Solution & Explanation

Moles of $H_2 = 2/2 = 1$. <br>Moles of $O_2 = 16/32 = 0.5$. <br>Moles of $N_2 = 28/28 = 1$. <br>Moles of $SO_2 = 32/64 = 0.5$. <br>Options A and C both contain 1 mole of molecules, hence the same number of molecules ($N_A$).