If $6 \ g$ of solute dissolved in $100 \ g$ of water lowers the freezing point by $0.93 \ K$. What is the molar mass of the solute? $(K_{f} = 1.86 \ K \ kg \ mol^{-1})$
- A$120 \ g \ mol^{-1}$
- B$60 \ g \ mol^{-1}$
- C$90 \ g \ mol^{-1}$
- D$180 \ g \ mol^{-1}$
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