Asked by Princess

A solution containing 0.750g of an unknown substance in 30.0g of cyclohexane was found to freeze at 3.1 degree Celsius. What is the molar mass of the unknown substance?
Answered by DrBob222
I assume this is a non-polar substance where i = 1
delta T = i*Kf*m
Substitute and solve for molality.

molality = mols/L
Substitute and solve for mols.

mols = grams/molar mass
Subtitute and solve for molar mass.
Answered by Silver den
230
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