Bromofrom has a nomal has freezing point of `7.734^(@)C` and `K_(f)=14.4^(@)C// m`.a solution of 2.60 g of an unknown substance in 100 g of bromoform freezes at `5.43^(@)C`. What is the molecules mass of the unkniwn substance ?

Options

A. 16.25
B. 162.5
C. 100
D. none of these

Answer

b