When 36.0 g of a solute having the empirical formula `CH_(2)O` is dissovled in 1.20 kg of water, the solution freezes at `-0.93^(@)C`. What is the moleculer formula of the solute ? (`K_(f) = 1.86^(@)C kg mol^(-1)`)

Options

A. `C_(30)H_(24)Fe_(3)`
B. `C_(10)H_(8)Fe`
C. `C_(5)H_(4)Fe`
D. `C_(20)H_(16)Fe_(2)`

Answer

d