Concept explainers
Interpretation:
The conclusion of the chemist, whether the compound is cocaine or not, is to be explained.
Concept introduction:
Molality (
) is calculated by dividing the moles of the solute by Kg of solvent.
Freezing point depression is a colligative property observed in solutions that results from the introduction of solute molecules to a solvent.
The freezing points of solutions are lower than that of the pure solvent and are directly proportional to the molality of the solute.
where
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