The density of is . Calculate the mole fraction of . — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question

💡 Solution & Explanation

$\text{Mass of 1 L} = 1250 \text{ g}$. $\text{Solute} = 3 \times 158 = 474 \text{ g}$. <br>$\text{Solvent} = 1250 - 474 = 776 \text{ g}$. <br>$\text{moles water} = 776 / 18 = 43.11 \text{ mol}$. <br>$\chi = \frac{3}{3 + 43.11} \approx 0.065$.