Blog

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.

Draw the Lewis Structure for BrO2- 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 BrO2- [molecularstructure] [polarity]

What is the triple point pressure of oxygen? Enter numbers only.  It is understood that your answer is in atm.

What is the triple point temperature of oxygen? Enter numbers only.  It is understood that your answer is in Kelvin (K).

Below are several compounds. Identify each as either being an ionic or molecular compound.  Table for Question 1 Compound ionic or molecular? TeBr4 [compound1] Rh(NO2)2 [compound2] NH2I [compound3] Os2S3    [compound4] BF3  [compound5]

Below are several compounds.  Identify each as either being an ionic or molecular compound. Table for Question 1 Compound ionic or molecular? CF4 [compound1] NH3 [compound2] CHI3 [compound3] V3N2 [compound4] Sr(NO3)2 [compound5]