$A$ solution of a nonvolatile solute is obtained by dissolving $1.5 \ g$ in $30 \ g$ of solvent. The boiling point elevation is $0.65 \ K$. Calculate the molal elevation constant if the molar mass of the solute is $150 \ g \ mol^{-1}$.
- A$1.95 \ K \ kg \ mol^{-1}$
- B$2.23 \ K \ kg \ mol^{-1}$
- C$1.52 \ K \ kg \ mol^{-1}$
- D$2.72 \ K \ kg \ mol^{-1}$
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