Question

What is the boiling point of 0.150g of glycerol in a 20.0g of water?

Answer 1

between 100.0 to 100.9 C at 1 atm of pressure. it is almost pure water, glycerol is only 0.75% in that solution. Doesn't affect too much the boiling point of the water. A 100% glycerol will have a 290C boiling point
Ref.: http://www.aciscience.org/docs/physical_properties_of_glycerine_and_its_solutions.pdf