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Which of the following would be least soluble in a nonpolar solvent?

. The osmotic pressure of a solution formed by dissolving 45.0 mg of aspirin C9H8O4 in 0.250 L of water at 25 °C is ________ atm. YOU MUST SHOW YOUR WORK FOR THIS PROBLEM

The amount of gas that occupies 60.82 L at 31.0 °C and 367 mm Hg is ________ mol. YOU MUST SHOW YOUR WORK FOR THIS PROBLEM

There are ________ unpaired electrons in a ground-state chlorine atom. 

A solution containing 10.0 g of an unknown liquid and 90.0 g water has a freezing point of -3.33 °C. Given Kf= 1.86g/°C for water, the molar mass of the unknown liquid is ______g/mol. YOU MUST SHOW YOUR WORK FOR THIS PROBLEM

The concentration of urea in a solution prepared by dissolving 16 g of urea in 25g of H2O is ________% by mass.  YOU MUST SHOW YOUR WORK FOR THIS PROBLEM

Using the table of average bond energies below, the ΔH for the reaction is ________ kJ. YOU MUST SHOW YOUR WORK FOR THIS PROBLEM                         Bond:      C≡C      C-C       H-I       C-I       C-H    D (kJ/mol):       839       348       299       240       413

Which hydroxides are weak bases? 

What is the molal concentration of potassium bromide in a solution prepared by dissolving 2.27 g of potassium bromide in 897 g of water? YOU MUST SHOW YOUR WORK FOR THIS PROBLEM

As a gaseous element vaporizes, the atoms become ________ and they have ________ attraction for one another.