10. What is the molarity of alcohol (C2H6O, density = 0.78g/mL) in an “80 proof” alcoholic beverage? 100 proof is equivalent to 50 mLs alcohol in 100 mLs of solution.
11. Fill in the following table for the substances below. For solubility, state whether it is soluble (S) or insoluble (I) in water. Under “electrolyte”, state whether it is a strong (SE), weak (WE), on non-electrolyte (NE). Under acid/base/salt, state whether it is a strong or weak acid (SA or WA), a strong or weak base (SB or WB), salt, or neither
Substance solubility electrolyte acid/base/salt
Zinc oxide
HCl (aq)
KOH
C12H22O11
12. What is the molarity of a solution of HCl based on the following data. A few drops of an indicator were added to a 25 mL sample of the acid, which was titrated with 0.04M NaOH. The initial burette reading was 5.0 mLs. NaOH was added to the acid/indicator solution until the indicator changed color, which occurred when the final burette reading was 28.3 mLs. Molarity of acid = ————-
13. Fill in the following table for the quantum numbers n, l, ml
Designation n l all allowed values of ml
6s
4p
3d
5f
14. Fill in the following for the atoms/ions below.
Designation # of protons # neutrons # electrons mass (amu)
37Cl
17O2-
26Al3+
32P
