Isobutyl alcohol has a boiling point of 108. c. how would you modify the procedure used in this experiment to determine its molar mass

You can determine the molar of an unknown solute from the boiling point elevation. When you do an experiment, add a certain known amount of the unknown compound to a solvent, say water. Then, determine the boiling point of the solution. The working equations would be the following:

Temp difference = Boiling pt of solution - Boiling point of pure solvent
Moles solute = (Temp difference)(Mass of solvent)/(Ebullioscopic constant of water)
Molar Mass = Mass of solute/Moles solute

The boiling point of water is 100°C,while the ebullioscopic constant is 0.512 °C/molal.

The answer is d.potassium