Multiple Choice
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1.
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A sample of oxygen gas with a volume of 2.0 L has its absolute temperature
halved while its pressure is doubled. What is the new volume of the gas?
a) | 4.0 L | b) | 0.5 L | c) | 2.0
L | d) | 1.0 L |
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2.
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What is the volume at STP occupied by 10.3 g of nitrogen gas?
a) | 231 L | b) | 16.5 L | c) | 12.9
L | d) | 8.24 L |
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3.
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What volume will 69.0 g of Ar occupy at 0.992 atm and 75 °C?
a) | 49.7 L | b) | 10.7 L | c) | 52.2
L | d) | 33.8 L |
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4.
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What volume of a 10.0 M HNO3 solution is needed to completely
neutralize 575 mL of a 4.10 Ca(OH)2 solution?
a) | 0.472 mL | b) | 236 mL | c) | 472
mL | d) | 0.236 mL |
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5.
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The number of valence electrons in an atom with configuration of
1s22s22p63s23p2 is
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6.
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[Kr] 5s24d10 is electron configuration for
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7.
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The lowest energy level that contains an f orbital is
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8.
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Which of the following molecules is best described as having a nearly
tetrahedral electron pair geometry?
a) | SnCl2 | b) | BeCl2 | c) | OF2 | d) | none of these |
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9.
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Which of the following molecules is polar?
a) | NH3 | b) | BCl3 | c) | neither of
them | d) | both of them |
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10.
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What is the final volume of a solution prepared by diluting 25 mL of 8.25M NaOH
solution to a concentration of 2.40 M?
a) | 210 mL | b) | 86 mL | c) | 330
mL | d) | 60 mL |
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11.
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Which of the following is true for the molecule O=C=S?
a) | it is polar because it has a bent shape | b) | it is nonpolar
because it is linear | c) | it is nonpolar because it contains only double
bonds | d) | it is polar because the polarities of the O=C and C=S do not
cancel |
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12.
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Which of the following is true about a molecule which contains three polar bonds
which have the same degree of polarity?
a) | the molecule will be non-polar if the electron distribution is trigonal
planar | b) | the molecule will never be polar | c) | the molecule will always be
polar | d) | none of the above is true |
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13.
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What is the molarity of chloride ions (Cl –) in 110 mL of
a solution containing 5.55 g of CaCl2?
a) | 0.91 M | b) | 0.67 M | c) | 0.0055
M | d) | 0.46 M |
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14.
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What volume of cabon dioxide will react completely with 1.00 g of lithium oxide
at 25 °C and 1.00 atm? Li2O (aq) + CO2 (g) ® Li2CO3 (s) a) | 687 mL | b) | 68.7 mL | c) | 819
mL | d) | 0.819 mL |
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15.
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A sample of propane has a volume of 35.3 L at 315 K and 922 mmHg. What is
its volume at STP?
a) | 37.1 L | b) | 33.6 L | c) | 49.2
L | d) | 25.2 L |
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16.
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How many grams of H3BO3 are needed to prepare 250 mL of
0.125 M solution?
a) | 3.09 g | b) | 1.93 g | c) | 0.505
g | d) | 0.312 g |
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