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Solute X (molecular substance) was added to a pure solvent and the freezing point depression was...

Solute X (molecular substance) was added to a pure solvent and the freezing point depression was measured to be 7.0°C. Separately, the same amount of solute Y (molecular substance) was added to the same amount of pure solvent and the freezing point depression was measured to be 10.5°C. Which solute (X or Y) has the higher molar mass. Explain your rationale.

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