In a freezing point depression experiment, 1.25 grams of an unknown compound is dissolved in 50.0 grams of carbon tetrachloride, CCl4. The resulting freezing temperature of this mixture was -26.52 degrees Celsius. What is the molar mass of this unknown compound? Kf(CCl4) = 29.9 degrees Celsius/m; Freezing point(CCl4) = -22.90 degrees Celsius.