Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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1.
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How is a real gas
different from a ideal gas?
a. | they begin to repel each other, exerting greater
pressure | b. | they begin to attract each other, condensing into liquid
form | c. | they continue to behave
ideally, regardless of the dista | | |
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2.
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Calculate the
quantity of energy required to change 1.5 moles of liquid water to steam at 1000C.
The molar heat of vaporization of water is 40 kJ/ mol. a. | 20kJ | c. | 60kJ | b. | 140kJ | d. | none of these | | | | |
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3.
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A bond is
considered polar if the electronegativity difference is a. | less than .4 | c. | greater than 1.7 | b. | between .41 an | | | | |
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4.
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Does water produce
a dipole ? a. | yes | c. | cannot not determine | b. | no | | | | |
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5.
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In a molecule of
MgCl2, the Mg will have a. | an positive ionic charge | c. | a partial positive charge | b. | a negative ionic char | d. | a partial negative charge | | | | |
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6.
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When an element
disassociates or ionizes in water, they form ions with the same electron configuration
as a. | halogens | c. | alkaline earth metals | b. | alkali metals | d. | noble gases | | | | |
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7.
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If an atom has 7
valence electrons, the most likely ion charge for it to form will be
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8.
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In general, within
a group of elements in the periodic table, as atomic number decreases,
electronegativity a. | decreases | c. | remains the
same | b. | increases | d. | shows no
trend | | | | |
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9.
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The normal boiling
point of water is a. | 0oF | c. | 182
oC | b. | 373 K | d. | 373oC | | | | |
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10.
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Determine the
molarity of an NaCl solution if 100.0 mL of the solution contains .20 moles of NaCl a. | .02M | c. | 2 M | b. | .2M | d. | none of these | | | | |
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11.
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What volume of .30
mol/L LiOH solution will react completely with .50 L of .30 mol/L
CdBr2?
2LiOH (aq) + CdBr2
(aq) à 2LiBr (aq) + Cd(OH)2 (s) a. | 1 L | c. | 2 L | b. | 3 L | d. | none of these | | | | |
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12.
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If more solute is
added to water than it can dissolve, the solution that results will be a. | saturated | c. | supersaturated | b. | unsaturated | d. | dilute | | | | |
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