A compound with molar weight of 80 g is dissolved in a solvent having density of

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Problem

A compound

\text{H}_2\text{X}

with molar weight of 80 g is dissolved in a solvent having density of

0.4 \text{ g mL}^{-1}

. Assuming no change in volume upon dissolution, the molality of a 3.2 molar solution is ____. (JEE Advanced 2014)