Brown, Lemay, and Bursten, Chemistry the Central Science, 8th ed.
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Calculate the molecular mass of an unknown compound given the following data from a freezing point depression experiment:
0.845 g of the unknown dissolved in 4.250 g of camphor had a freezing point of 1.36°C. The freezing-point depression constant for camphor is 40.°C.kg/mol and the melting point of pure camphor is 129°C.
1. Calculate the freezing temperature depression, ŠT
2. Calculate the molality
3. Calculate the number of moles present of the unknown compound
4. Calculate the experimental molar mass of the unknown compound