Predict whether the change in entropy of the system below would be positive, negative, or no change. 

Instead of water, you try to dissolve the salt in the previous question in 2.0 L of a 0.1 M NaSO4 solution.  Would you expect more, less, or the same amount of your salt to dissolve in this solution compared with what you calculated in water?  

Calculate the partial pressure (in atm) of N2O in the vapor above a solution with an N2O concentration of 1.0 x 10-5 M.  k for NO = 2.4 x 10-2 M/atm Use the answer box to fill in the blank for your answer: ____

The following reaction has a Kp of 0.126 at a particular temperature.  At that same temperature, the Kc is

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

Next to each species below, choose the type of solid each will form.  (Selection: atomic, molecular, covalent, ionic, metallic) Table for Question 10 Compound Type of Solid SeF3Cl Pd(NO2)2 Xe NH2I Ir2S3 Cu diamond Fe

Estimate the melting point of oxygen at 1.00 atm. Enter numbers only.  It is understood that your answer is in Kelvin (K).

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.  Which molecule would you expect to have the highest vapor pressure?

Draw the Lewis Structure for XeOF4 and then choose:   Questions Answer Choices The correct molecular structure of XeOF4 is: The polarity of XeOF4 is:  

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 highest to lowest boiling point. With (1) being the highest boiling point and (6) being the lowest boiling point.