Ineg you fathercarras me ! how does adding a non-volatile solute to a pure solvent affect the vapor pressure of the pure solvent? the solvent's vapor pressure will increase. the solvent's vapor pressure will decrease. the solvent's vapor pressure will not be affected. the solvent's vapor pressure will most likely change, but not in a predictable way. to make a 2.0 m solution, how many moles of solute must be dissolved in 0.50 liters of solution? 0.25 moles solute 0.50 moles solute 1.0 mole solute 2.0 moles solute

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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.