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1) In order to produce sp3 hybrid orbitals, ________ s atomic orbital(s) and ________ p
atomic orbital(s) must be mixed.
A) one, two
B) one, three
C) one, one
D) two, two
E) two, three
2) Atomic radius generally decreases as we move ________.
A) down a group and from right to left across a period
B) up a group and from left to right across a period
C) down a group and from left to right across a period
D) up a group and from right to left across a period
E) down a group; the period position has no effect
3) Using the table of bond dissociation energies, the H for the following gas-phase
reaction is ________ kJ.
A) -44
B) 38
C) 304
D) 2134
E) -38
4) The π bond in ethylene, , results from the overlap of ________.
A) sp3 hybrid orbitals
B) s atomic orbitals
C) sp hybrid orbitals
D) sp2 hybrid orbitals
E) p atomic orbitals
5) Which of the following statements is true?
A) Processes that are spontaneous in one direction are spontaneous in the opposite
direction.
B) Processes are spontaneous because they occur at an observable rate.
C) Spontaneity can depend on the temperature.
D) All of the statements are true.
6) Which one of the following is considered to be ionizing radiation?
A) visible light
B) radio waves
C) X-rays
D) microwaves
E) infrared radiation
7) The lanthanide contraction is responsible for the fact that ________.
A) Zr and Y have about the same radius
B) Zr and Nb have similar oxidation states
C) Zr and Hf have about the same radius
D) Zr and Zn have similar oxidation states
E) Zr and Hf have the same oxidation states
8) At 20 oC, a 3.13 M aqueous solution of ammonium chloride has a density of 1.0457
g/mL. What is the molality of ammonium chloride in the solution? The formula weight
of NH4Cl is 53.50 g/mol.
A) 3.56
B) 0.0611
C) 3.13
D) 0.334
E) 16.00
9) An unsaturated solution is one that ________.
A) has no double bonds
B) contains the maximum concentration of solute possible, and is in equilibrium with
undissolved solute
C) has a concentration lower than the solubility
D) contains more dissolved solute than the solubility allows
E) contains no solute
10) What is the molecular formula for heptane?
A) C6H12
B) C6H14
C) C7H14
D) C7H16
E) C7H18
11) The expression for Kp for the reaction below is ________.
4CuO (s) + CH4 (g) CO2 (g) + 4Cu (s) + 2H2O (g)
A)
B)
C)
D)
E)
