May 26, 2016

Homework Help: Chem

Posted by Mark on Wednesday, March 23, 2011 at 6:01pm.

Some ethylene glycol, HOCH2CH2OH, is added to your car's cooling system along with 4.4 kg of water. If the freezing point of the water-glycol solution is -15.0C, how many grams of HOCH2CH2OH must have been added?

I used the equation: 15 celcius = 1 x 1.86 celcius/moles per kg x molality and got 8.064 but I dont know the units and I dont know where to use 4.4kg of water.

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