For 11.2 L of gas at STP, which of the following is/are correct? — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question

💡 Solution & Explanation

$\text{Moles} = 11.2 / 22.4 = 0.5$ (A). <br>$\text{Molecules} = 0.5 \times N_A = 3.01 \times 10^{23}$ (B). <br>$\text{Mass} = 0.5 \times 2 = 1 \text{ g}$ (D). <br>$\text{Atoms of H} = 0.5 \times 2 \times N_A = 1 N_A$, which weighs 1 g (C).