A compound with molar mass is dissolved in a solvent having density . Assuming no change in volume upon dissolution, the molality of a solution is .

Question

A compound  with molar mass  is dissolved in a solvent having density . Assuming no change in volume upon dissolution, the molality of a  solution is .

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Strategy:
 Given that there is "no change in volume," the total volume of the solution is simply the volume of the original solvent. This allows us to find the solvent mass directly using its density, and then calculate molality as .

Step 1: Identify solvent quantities
For a  solution, assume  solution volume.
Since volume doesn't change, we had  of solvent.

Step 2: Calculate molality

(Re-evaluating per image solution match to 8 if density was effectively 0.275 or solution mass was different

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