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Which of the following terms are unitless?A. MolalityB. MolarityC. Mole fractionD. Mass per cent

Answer» Both moel fraction and mass per cent are unitless as b oth are ratios of moles and mass respectively.
Mole fraction `=("Nuumber of moles of solute")/("Number of moles of solution")=("moles")/("moles")`
`=("Number of moles of solvent")/("Number of moles of Solution")=("moles")/("moles")`
`"Mass per cent"=("Mass of soulte in gram")/("Mass of solution in gram")xx100`


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