The number of moles of in of air containing oxygen by volume, at STP, is: — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question

💡 Solution & Explanation

$\text{Volume of } O_2 = 1\text{ L} \times 0.21 = 0.21\text{ L}$. <br>$\text{Moles} = V / 22.4 = 0.21 / 22.4 \approx 0.009375\text{ mol}$. [1, 2]