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Molecular formula : MW : CAS :
nature : Symbol r. When referring to the B material solute molar ratio, or using symbols rB r (B). Solute B refers to the volume of material and the material solvent weight ratio. For a single solute solution : r = x / (1-x), where x solute to the mole fraction, r is the dimensionless quantity. Also known as the mole (amount-of-substance ratio).
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