Arey bhai, first write the formula for freezing point depression: ΔTf = i × Kf × m. For non-volatile solute, van’t Hoff factor ‘i’ is usually 1, unless it breaks or joins. Then, molality m = (given mass of solute / molar mass) / (mass of solvent in kg). From here you can find molar mass.
I remember this because last winter, I was studying this same thing on my phone under that streetlight near the new construction site—the cold made me think of freezing point, yaar. But the "obvious" thing they don't tell you? In real life, like with the salty water in our village pond, it doesn’t freeze easily, hanh... but in exam, they give you pure numbers, no impurities. My life says stick to the book formula for NEET, but trust me, real solutions are more *ziddi*—they never follow the law exactly.
#archery#recurve
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