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1) Which of the following are strong electrolytes?
HCl
HC2H3O2
NH3
KCl
A) HCl, KCl
B) HCl, NH3, KCl
C) HCl, HC2H3O2, NH3, KCl
D) HCl, HC2H3O2, KCl
E) HC2H3O2, KCl
2) [Ar]4s23d104p3 is the electron configuration of a(n) ________ atom.
A) As
B) V
C) P
D) Sb
E) Sn
3) Which one of the following is a metalloid?
A) Se
B) Hf
C) Zr
D) Xe
E) Si
4) A gas vessel is attached to an open-end manometer filled with a nonvolatile liquid of
density 0.993 g/mL as shown below.
The difference in heights of the liquid in the two sides of the manometer is 32.3 mm
when the atmospheric pressure is 765 mm Hg. Given that the density of mercury is 13.6
g/mL, the pressure of the enclosed gas is ________ atm.
A) 1.05
B) 1.01
C) 0.976
D) 0.993
E) 1.08
5) How many liters of wine can be held in a wine barrel whose capacity is 30.0 gal?
A) 1.26 X 10-4
B) 0.126
C) 114
D) 7.93 X 103
E) 7.93
6) What is the ligand in Ca3[Fe(CN)6]2?
A) Ca2+
B) Fe3+
C) CN-
D) Fe(CN)6
3-
E) Fe2+
7) The pressure of the atmosphere ________.
A) increases with altitude
B) follows the same trend as temperature
C) decreases with altitude
D) follows the reverse trend as temperature
E) stays the same
8) In the molecule below, which atom has the largest partial negative charge?
A) Cl
B) F
C) Br
D) I
E) C
9) A solution is prepared by adding 1.10 mol of KCl to 889 g of water. The
concentration of KCl is ________ molal.
A) 1.24 x 10-3
B) 808
C) 0.808
D) 978
E) 1.24
10) Nitrogen dioxide decomposes to nitric oxide and oxygen via the reaction:
2NO2 (g) --> 2NO (g) + O2 (g)
In a particular experiment at 300 oC, [NO2] drops from 0.0100 to 0.00800 M in 100 s.
The rate of appearance of O2 for this period is ________ M/s.
A) 1.0 x 10-5
B) 2.0 x 10-5
C) 4.0 x 10-5
D) 2.0 x 10-3
E) 4.0 x 10-3
11) A solution of acetic acid is 2.0% dissociated at 25.0oC. What was the original
concentration (in M) of the acetic acid solution? The Ka at 25.0 oC for acetic acid is 1.8
x 10-5.
12) Non superimposable isomers are ________ isomers.
13) What happens to the atomic mass number and the atomic number of a radioisotope
when it undergoes alpha emission?
14) Give the electron configuration of Cu2+.
15) A large difference in formation constant (Kf) of a poly- versus monodentate ligand
is called ________.
