Determin the grams of an organic compound (MW = 158 g/mole) which must be disolved in 220 g of chloroform to..

Determine the grams of an organic compound (MW = 158 g/mole) which must be dissolved in 220 g of chloroform to lower the freezing point of the resulting solution to –66.1 °C.

Answer:
To answer at this question I would know :
1) freezing point of chloroform
2 ) kf of chloroform

If you have these data wuold you be so kind to tell me ?
I will answer at once

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