Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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To
calculate the emperical formula reduce the subscript to the lowest common denominator and you do not
need to include "1's"
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1.
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Determine the emperical formula for C6H12O6.
a. | C6H12O6 | c. | CH2O | b. | CH12O1 | d. | C1H2O1 | | | | |
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2.
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Use the following
balanced equation
Al (s) + 3AgNO3 (aq)
à
Al(NO3)3 (aq) + 3Ag (s)
How many moles of Ag
will be produced by the reaction of excess AgNO3 with .750 mol Al? a. | 2.25 | c. | .50 | b. | 1.5 | d. | none of these | | | | |
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3.
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Use the following
balanced equation
Al (s) + 3AgNO3 (aq)
àAl(NO3)3 (aq) + 3Ag
(s)
If 2.0 mol Al are combined with 5.0 mol AgNO3, which is the limiting
reagent?
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4.
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If the theoretical
yield for a reaction is 5g and the actual yield is 2 g, determine the percent yield.
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5.
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Increasing the
volume of a container will cause molecules to: a. | collide against a larger surface area | c. | collide against a smaller surface area | b. | move faster and collide
harder | d. | become larger | | | | |
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6.
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Convert 1000 mmHg
into atmospheres a. | 8.12 | c. | 1.32 | b. | 1.08 | d. | none of these | | | | |
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7.
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Hydrogen gas is
collected over water at 21.0OC (PH2O = 30mmHg) if atmospheric pressure is
755 mmHg, determine the partial pressure of hydrogen gas. a. | 720 mmHg | c. | 785 mmHg | b. | 725 mmHg | d. | 756 mmHg | | | | |
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8.
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What temperature
change will likely cause a increase in volume if the container is elastic? a. | increase | c. | no change | b. | decrease | | | | |
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9.
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The volume that a
gas occupies depends mostly upon a. | the actual size of the molecules | b. | the amount of space between the
molecules | c. | the weight of the molecule | d. | the bonding in
the molecule | | |
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10.
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Which of the
following variables are proportional to volume? a. | temperature | c. | moles | b. | pressure | | | | |
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11.
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What is the value
for volume for the number of liters that 1 mole of a gas occupies at 273K and 1atm? a. | 760 | c. | 22.4 | b. | 44.8 | d. | none of these | | | | |
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12.
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If 3.0 L of
N2 reacts with an excess of H2 in the reaction N2 +
3H2 à 2NH3, what volume of NH3 will be produced?
(Assuming that
pressure and temperature remain constant) a. | 6.0 L | c. | 10.0 L | b. | 2.5 L | d. | 15.0 L | | | | |
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