The boiling point of chloroform, $,$ is $61\mathrm{.}700$deg C at $1$ atmosphere.

In a laboratory experiment, students synthesized a new compound and found that when $11\mathrm{.}29$ grams of the compound were dissolved in $236\mathrm{.}7$ grams of chloroform, the solution began to boil at $62\mathrm{.}672$deg C$.$ The compound was also found to be nonvolatile and a non$-$electrolyte.

What is the molecular weight they determined for this compound, in g$/$mol$?$

The boiling point of benzene, $,$ is $80\mathrm{.}100$deg C at $1$ atmosphere.

In a laboratory experiment, students synthesized a new compound and found that when $11\mathrm{.}32$ grams of the compound were dissolved in $271\mathrm{.}2$ grams of benzene, the solution began to boil at $80\mathrm{.}398$deg C$.$ The compound was also found to be nonvolatile and a non$-$electrolyte.

What is the molecular weight they determined for this compound, in g$/$mol$?$

The freezing point of ethanol, CH$3$CH$2$OH$,$ is $-117\mathrm{.}300$deg C at $1$ atmosphere. Kf$($ethanol$)=1\mathrm{.}99$deg C$/$m

In a laboratory experiment, students synthesized a new compound and found that when $10\mathrm{.}32$ grams of the compound were dissolved in $298\mathrm{.}1$ grams of ethanol, the solution began to freeze at $-117\mathrm{.}539$deg C$.$ The compound was also found to be nonvolatile and a non$-$electrolyte.

What is the molecular weight they determined for this compound, in g$/$mol$?$