posted by Kevin on .
"A sample of a nonpolar molecules capable of only dispersion forces can have a higher boiling point the a sample of a polar molecules capable of hydrogen bonding. This statement can only be true if the formula weight of nonpolar molecule(the answers are =,<, or >)the formula weight of the polar molecule."
Dispersion forces depend upon the size of the molecule; that is, upon the molar mass. Therefore, the molar mass MUST be larger for the non-polar molecule.