Concept explainers
Interpretation:
The molality of para-dichlorobenzene in a solution needs to be determined.
Concept introduction:
Mass percent of any species in the solution can be calculated from its mass and mass of the solution. For example, if mass of the species is x and that of solution is y, the mass percent of the solution can be calculated as follows:
The molality of solution is defined as number of moles of solute in 1 kg of the solvent. Thus,
The density of the solution is related to mass and volume of solution as follows:
The number of moles of substance can be calculated from mass and molar mass as follows:
Here, m is mass and M is molar mass.
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General Chemistry: Principles and Modern Applications (11th Edition)
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