If 215 g of an unknown solid nonelectrplyte is dissolved

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Reference no: EM13633769

If 2.15 g of an unknown solid nonelectrplyte is dissolved in18.1 g of naphthalene, the resulting solution is foundexperimentally to freeze 4.3 C lower than pure naphthalene. If thefreezing point depression constant for naphthalene is 6.85 C/m,calculate each of the following.

a. The molality of the solution by using only the freezingpoint depression and the freezing point depression constant.

b. The number of moles of unknown dissolved in the 10.1g ofnaphthalene using the mass of naphthalene and the molality of theunknown.

c. The molar mass of the unknown.

d. The molecular formula of the unknown if it is comprised of40.0% carbon, 6.7% hydrogen and 53.3% oxygen.

e. Why is it important to specify that the unkwnon is anonelectrolyte?

Reference no: EM13633769

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