Data were collected for trial 1 to determine the molar mass of a nonvolatile solid solute when dissolved in cyclohexane.

mass of cyclohexane 10.14g
mass of added solute .255g
kf value for cyclohexane 20.0
freezing point change δtf(°c) 3.04

what is;
mass of cyclohexane in solution (kg)
moles of solute, total (mol)
mass of solute in solution, total (g)
molar mass of solute (g/mol)

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.

c-14 is carbon-14, or radiocarbon.   it is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.

the answer is d. matter from the air combined with the steel wool.