Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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Which numbers balance the equation: ___Fe +
___O2--->___ Fe2O3
a. | 2,3,4 | c. | 4,3,2 | b. | 2,1,3 | d. | 2,1,1 |
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2.
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Which numbers balance the equation: __ S8+__ O2---> __ SO3
a. | 1,12,8 | c. | 1,3,2 | b. | 2,3,2 | d. | 1,4,8 |
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3.
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Which numbers balance the equation: __ HgO ---> __ Hg + __O2
a. | 1,1,1 | c. | 2,2,1 | b. | 2,1,1 | d. | 2,2,2 |
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4.
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Which numbers balance the equation: ___N2+
___H2--->___ NH3
a. | 2,3,1 | c. | 1,3,2 | b. | 2,2,2 | d. | 1,1,1 |
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5.
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Which numbers balance the equation: ___Zn + ___HCl --->___ ZnCl2+ ___H2
a. | 1,2,1,2 | c. | 2,2,2,1 | b. | 1,1,1,1 | d. | 1,2,1,1 |
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6.
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Which numbers balance the equation: ___H2+ ___O2 ---> ___ H2O
a. | 2,2,2 | c. | 2,1,2 | b. | 1,1,1 | d. | 1,2,1 |
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7.
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Which numbers balance the equation: __ HgO ---> __ Hg + __O2
a. | 2,1,1 | c. | 2,2,2 | b. | 1,1,1 | d. | 2,2,1 |
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8.
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Which numbers balance the equation: ___N2+___ O2--->___ N2O
a. | 2,2,2 | c. | 2,1,2 | b. | 1,1,1 | d. | 1,2,1 |
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9.
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Which numbers balance the equation: ___ K +
___Br2--->___ KBr
a. | 1,1,1 | c. | 1,1,2 | b. | 2,1,2 | d. | 2,2,2 |
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10.
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Which numbers balance the equation: ___ Na
+___ H2O ---> ___NaOH + ___H2
a. | 2,1,2,1 | c. | 2,2,2,1 | b. | 1,2,2,2 | d. | 1,1,1,1 |
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