The freezing point of pure benzene is 5.50 C kg.mol-1 , and its Kfp is −5.12 C kg.mol-1 . A 0.546 g sample of a animal hormone is dissolved in 15.0 g of benzene, and the solution freezes at 5.26 C ....

The freezing point of pure benzene is 5.50 C
kg.mol-1
, and its Kfp is −5.12 C
kg.mol-1


. A 0.546 g sample of a
animal hormone is dissolved in 15.0 g of benzene, and the solution freezes at 5.26 C
.
Determine the molar mass of the hormone.
(You may assume that the hormone is a non-electrolyte).