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2 moles of solute dissolved in 8 moles of solvent. Mole fraction of solvent is

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--> Number of moles of the solute per kilogram of the solvent is molality.

 Molality = Mass of solvent (in kg) Number of moles of the solute 

 Molarity = Volume of solution (in L) Number of moles of the solute 

 Mole fraction = Number of moles of the solute + Number of moles of the solvent  Number of moles of the solute 

 Molar mass = Number of moles of substance Mass of substance