Which solution has the lower freezing point? 11.0 g of methanol in 100. g of water OR 22.0 g of ethanol in 200. g of water?

Answer 1

Use the same procedure as for Sean (by the way it is easier for us if you stick to the same screen name).
mols = grams/molar mass and
m = mols/kg solvent
Substitute and solve for delta T.
Remember new freezing point is 0-delta T.