How many grams of ethylene glycol must be added to 37.8g of water to give a freezing point of -0.150 degrees Celsius

Answer 1

delta T = 0.150
delta T = Kf*m
Substitute dT and Kf and solve for m.

Then m = mols/kg solvent
Substitute ad solve for mols

Then mol = grams/molar mass
Substitute and solve for grams.

Answer 2

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