Multiple Choice
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1.
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What is the correct formula for zinc acetate?
A) | Zn(C2H3O2)2 | B) | Zn(C2H3O2)4 | C) | Zn2C2H3O2 | D) | ZnC2H3O2 |
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2.
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Ammonium fluoride (NH4F) is considered
which of the following?
A) | ionic compound | B) | molecular element | C) | atomic
element | D) | molecular compound |
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3.
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Carbon is considered which of the
following?
A) | molecular compound | B) | atomic element | C) | ionic
compound | D) | molecular element |
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4.
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The formula for potassium oxalate is
K2C2O4. What is the formula for magnesium oxalate?
A) | MgC2O4 | B) | Mg(C2O4)2 | C) | Mg2(C2O4)2 | D) | Mg2C2O4 |
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5.
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What is the correct name for MgF2?
A) | magnesium difluoride | B) | monomagnesium difluoride | C) | magnesium (II)
flouride | D) | magnesium fluoride |
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6.
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Calculate the molar mass of ammonium
carbonate.
A) | 88.05 g/mol | B) | 112.09 g/mol | C) | 96.09
g/mol | D) | 78.05 g/mol |
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7.
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How many moles of bromine gas are in 37.7
grams?
A) | 3.01x103 | B) | 0.236 | C) | 79.9 | D) | 0.472 |
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8.
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What is the formula for an ionic compound made of
barium and nitrogen?
A) | Ba3N2 | B) | Ba2N3 | C) | BaN | D) | Ba2N4 |
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9.
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How many total atoms are in the formula
Al2(CO3)3?
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10.
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The Law of Constant Composition states:
A) | Matter cannot be either created or destroyed in a
chemical reaction. | B) | The nucleus is a
dense region of positive charge that always contains protons and neutrons. | C) | All samples of a given compound have the same proportions of their constituent
elements. | D) | All atoms of a given element have a constant composition
and are different than atoms of any other element. |
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11.
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The phosphorous-to-hydrogen mass ratio is 10.2 for
a compound. This ratio could correspond to the compound:
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12.
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How many atoms are in 15.6 grams of
silicon?
A) | 3.34x1023 | B) | 438 | C) | 0.555 | D) | 2.64x1026 |
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13.
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What is the formula mass of copper(II)
fluoride?
A) | 90.00 | B) | 146.10 | C) | 165.10 | D) | 101.55 amu |
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14.
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How many oxygen atoms are in 78.0 grams of sulfur
trioxide?
A) | 3.76x1027 | B) | 5.87x1023 | C) | 1.76x1024 | D) | 7.33x1023 |
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