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You dissolve 25.0 g of solute in enough water to make a solution that has a total volume of 100.0 mL and a density of 0.953 g/mL. Calculate the mass percent of the solution.  Enter numbers and decimal points ONLY.  Enter three significant digits past the decimal point.  Your answer should be four significant digits total. DO NOT enter M, it is known that your answer is in M.

Shown below are 6 compounds.  Compounds A and B are ionic with their formula given, while compounds C-F are molecular and their 3-D shape is shown.  Table for Question 13 Letter Identifier A B C D E F Compound NaF FeCl   Match the compounds with their order from lowest to highest melting point. With (1) being the lowest melting point and (6) being the highest boiling point.  

A 1.50-L solution saturated with lead(II) iodide at a certain nonstandard temperature contains .  Calculate the Ksp for this compound at this temperature. 

You have 4 molecules. Molecule A is ionic, Molecule B is polar and capable of hydrogen bonding, Molecule C is polar and Molecule D is nonpolar.  Would you expect Molecule B or Molecule C to have a lower boiling point?

A 1.50-L solution saturated with tin(II) iodide at a certain nonstandard temperature contains .  Calculate the Ksp for this compound at this temperature. 

A solution of KBr has a molarity of 1.50 M, a molality of 1.80, a mass% of 16.5 %, and a mole fraction of 0.0305. Calculate the freezing point of the solution (in

Draw the Lewis Structure for XeF2 and then choose (a) the correct molecular structure (choices = linear, trigonal planar, bent, tetrahedral, trigonal pyramidal, trigonal bipyramidal, seesaw, T-shaped, square pyramidal, square planar) and then indicate whether the molecule is polar or nonpolar (choices = polar, nonpolar).  Table for Question 12 Compound molecular structure polarity XeF2 [molecularstructure] [polarity]

The initial pH of a 250.0 mL buffer that consists of 0.15 M chloroacetic acid and 0.13 M sodium chloroacetate is 2.92.  Calculate the pH of the buffer after 2.00 mL of 4.0 M NaOH is added to the buffer. (

What is the hybridization of the central atom in PCl5?

True or False: You have 4 molecules. Molecule A is ionic, Molecule B is polar and capable of hydrogen bonding, Molecule C is polar and Molecule D is nonpolar.  H2O would be expected to have a higher boiling point than molecule C.