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A solution that contains $55\mathrm{.}0g$ of ascorbic acid $($vitamin C$)$ in $250g$ of water freezes at $-2\mathrm{.}34C.$ Calculate the molar mass $($in units of $\frac{g}{m}ol)$ of the solute. $K_f$ of water is $1\mathrm{.}86\frac{C}{m}.$

Carbon tetrachloride, once widely used in fire extinguishers and as a dry$-$cleaning fluid, has been found to cause liver damage to those exposed to its vapors over long periods of time. What is the boiling point of a solution prepared by dissolving $375g$ of sulfur $(S_8,$ MW $=256\mathrm{.}5\frac{g}{m}ol$ in $1250g$ of $CC{l}_4?,$ boiling point of pure $[$:$CC{l}_4=76\mathrm{.}7C\}$

What is the molar mass of toluene if $0\mathrm{.}85g$ of toluene depresses the freezing point of $100g$ of benzene by $0\mathrm{.}47C?K_f$ of benzene is $5\mathrm{.}12\frac{C}{m}.$