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a) The freezing point of water, H2O, is 0.000 °C at 1 atmosphere.  Kf(water) = 1.86 °C/m...

a) The freezing point of water, H2O, is 0.000 °C at 1 atmosphere.  Kf(water) = 1.86 °C/m

In a laboratory experiment, students synthesized a new compound and found that when 12.48 grams of the compound were dissolved in 246.0 grams of water, the solution began to freeze at -1.570 °C. The compound was also found to be nonvolatile and a non-electrolyte.  

What is the molecular weight they determined for this compound?  

b) The freezing point of benzene, C6H6, is 5.500 °C at 1 atmosphere.  Kf(benzene) = 5.12 °C/m

In a laboratory experiment, students synthesized a new compound and found that when 14.28 grams of the compound were dissolved in 281.0 grams of benzene, the solution began to freeze at 4.827 °C. The compound was also found to be nonvolatile and a non-electrolyte.  

What is the molecular weight they determined for this compound?  

Thank you!!

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