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1) The central atom in ________ does not violate the octet rule.
A) SF4
B) KrF2
C) CF4
D) XeF4
E) ICl4
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2) Which atom can accommodate an octet of electrons, but doesn't necessarily have to
accommodate an octet?
A) N
B) C
C) H
D) O
E) B
3) What is the molecular formula for octane?
A) C4H10
B) C5H10
C) C6H14
D) C14H28
E) C8H18
4) The electron-domain geometry of the AsF5 molecule is trigonal bipyramidal. The
hybrid orbitals used by the As atom for bonding are ________ orbitals.
A) sp2d2
B) sp3
C) sp3d2
D) sp3d
E) sp2
5) What is the electron configuration for the Fe3+ ion?
A) [Ar]4s13d6
B) [Ar]4s03d7
C) [Ar]4s03d5
D) [Ar]4s23d9
E) [Ne]3s23p10
6) An alkali metal forms a compound with chlorine with the formula ________.
(The symbol M represents any one of the alkali metals.)
A) M2Cl2
B) M2Cl
C) MCl2
D) MCl
E) MCl3
7) Which pair of substances could be used to illustrate the law of multiple proportions?
A) SO2, H2SO4
B) CO, CO2
C) H2O, O2
D) CH4, C6H12O6
E) NaCl, KCl
8) A sample of aluminum metal absorbs 11.2 J of heat, upon which the temperature of
the sample increases from 23.2 °C to 30.5 °C. Since the specific heat capacity of
aluminum is 0.90 J/g-K, the mass of the sample is ________ g.
A) 72
B) 1.7
C) 10.
D) 65
E) 7.3
9) How many grams of H3PO4 are in 175 mL of a 4.00 M solution of H3PO4?
A) 0.700
B) 20.0
C) 68.6
D) 4.90
E) 612
10) The concentration of CO2 in a soft drink bottled with a partial pressure of CO2 of
4.0 atm over the liquid at 25 oC is 1.2 x 10-1 M. The Henry's law constant for CO2 at
this temperature is ________.
A) 3.0 x 10-2 mol/L-atm
B) 4.5 x 10-3 mol/L-atm
C) 5.6 x 10-3 mol/L-atm
D) 2.3 x 10-2 mol/L-atm
E) More information is needed to solve the problem.
