If 2.15g of an unknown solid nonelectrolyte is dissolved in 18.6g of naphthalene, the resulting solution is found experimentally to freeze 4.3 degrees Celsius lower than pure naphthalene. If the freezing point depression constant for naphthalene is 6.85 degrees Celsius per mole (C/m), compute each of the following-
a) The molality of the solution by utilizing only the freezing point depression and the freezing point depression constant.
b) The number of moles of unknown dissolved in the 10.1g of naphthalene utilizing the mass of naphthalene and the molality of the unknown.
c) The molar mass of the unknown
d) The molecular formula of the unknown if it is comprised of 40.0% carbon, 6.7% hydrogen and 53.3% oxygen.
e) Explain why is it significant to specify that the unknown is anonelectrolyte?