1) What e x posure level to radiation is fatal to most humans?
A) 100 rem
B) 200 rem
C) 600 rem
D) 300 rem
E) 1000 rem
2) For a given reaction, H = -24.2 kJ/mol and S = -55.5 J/K-mol. The reaction will
have G = 0 at ________K. Assume that H and S do not vary with temperature.
A) 436
B) 2293
C) 298
D) 2.29
E) 0.436
3) The ground-state electron configuration of V is ________.
A) 1s22s22p63s23p64s23d3
B) 1s22s22p63s23p63d5
C) 1s22s22p63s23p11
D) 1s22s22p63s23p64s23d4
E) None of the above
4) At equilibrium, ________.
A) all chemical reactions have ceased
B) the rates of the forward and reverse reactions are equal
C) the rate constants of the forward and reverse reactions are equal
D) the value of the equilibrium constant is 1
E) the limiting reagent has been consumed
5) Of the three types of radioactivity characterized by Rutherford, which is/are not
electrically charged?
A) ±-rays
B) ±-rays, ²-rays, and ³-rays
C) ³-rays
D) ±-rays and ²-rays
E) ±-rays and ³-rays
6) A sample of an unknown volatile liquid was injected into a Dumas flask mflask =
27.0928 g,
vflask = 0.1040 L) and heated until no visible traces of the liquid could be found. The
flask and its contents were then rapidly cooled and reweighed (mflask + vapor = 27.4593
g). The atmospheric pressure and temperature during the experiment were 0.976 atm
and 18.0 °C, respectively. The unknown volatile liquid was ________.
A) C6H12
B) C6H14
C) C7H14
D) C7H16
E) C6H6
7) The coordination sphere of a complex consists of ________.
A) the central metal ion only
B) the ligands
C) the central metal ion and the ligands bonded to it
D) the primary and secondary valencies
E) coordination and steric numbers
8) A 0.325 L flask filled with gas at 0.851 atm and 19 °C contains ________ mol of gas.
A) 0.0116
B) 0.0148
C) 9.42
D) 12.4
E) 80.7
9) According to valence bond theory, which orbitals overlap in the formation of the
bond in Cl2?
A) 4p on Cl and 4p on Cl
B) 3p on Cl and 3p on Cl
C) sp on Cl and sp on Cl
D) 3s on Cl and 3s on Cl
E) 2p on Cl and 2p on Cl
10) The oxide of which element below can react with hydrochloric acid?
A) sulfur
B) selenium
C) nitrogen
D) sodium
E) carbon
11) Of the molecules below, the bond in ________ is the most polar.
A) HBr
B) HI
C) HCl
D) HF
E) H2