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1) What is the largest number of protons that can e x ist in a nucleus and still be stable?
A) 206
B) 50
C) 92
D) 83
E) 84
2) Electromagnetic radiation with a wavelength of 425 nm appears as violet light to the
human eye. The energy of one photon of this light is ________ J.
A) 8.45 X 10-32
B) 4.68 X 10-28
C) 4.68 X 10-19
D) 8.45 X 10-23
E) 2.14 X 1018
3) A compound that is composed of only carbon and hydrogen contains 85.7% C and
14.3% H by mass. What is the empirical formula of the compound?
A) CH2
B) C2H4
C) CH4
D) C4H8
E) C86H14
4) In liquids, the attractive intermolecular forces are ________.
A) very weak compared with kinetic energies of the molecules
B) strong enough to hold molecules relatively close together
C) strong enough to keep the molecules confined to vibrating about their fixed lattice
points
D) not strong enough to keep molecules from moving past each other
E) strong enough to hold molecules relatively close together but not strong enough to
keep molecules from moving past each other
5) The net ionic equation for the dissolution of zinc metal in aqueous hydrobromic acid
is ________.
A) Zn (s) + 2Br- (aq) → ZnBr2 (aq)
B) Zn (s) + 2HBr (aq) → ZnBr2 (aq) + 2H+ (aq)
C) Zn (s) + 2HBr (aq) → ZnBr2 (s) + 2H+ (aq)
D) Zn (s) + 2H+ (aq) → Zn2+ (aq) + H2 (g)
E) 2Zn (s) + H+ (aq) → 2Zn2+ (aq) + H2 (g)
6) The reaction of a metal with a nonmetal produces a(n) ________.
A) base
B) salt
C) acid
D) oxide
E) hydroxide
7) When the following equation is balanced, the coefficient of O2 is ________.
C2H4O (g) + O2 (g) → CO2 (g) + H2O (g)
A) 2
B) 3
C) 4
D) 5
E) 1
8) The list that correctly indicates the order of metallic character is ________.
A) Sr > Ca > Mg
B) F > Cl > Br
C) C > Ge > Si
D) Li > Na > K
E) O > Se > S
9) Aromatic hydrocarbons ________.
A) readily undergo addition reactions like alkenes
B) contain a series of € bonds on several consecutive carbon atoms
C) undergo substitution reactions more easily than saturated hydrocarbons
D) have sp3 hybridized carbon atoms
10) What type(s) of intermolecular forces exist between PH3 and CO3
2-?
A) dispersion forces
B) dispersion forces and ion-dipole
C) dispersion forces, ion-dipole, and dipole-dipole
D) dispersion forces and dipole-dipole
E) dispersion forces, ion-dipole, dipole-dipole, and hydrogen bonds
