Name:____________________________
Class Period:__________________
Simplest (Empirical) Formula
Directions:
Find the empirical formula for each of the compounds whose percentage composition is given below.
1.
|
88.8% copper; 11.2% oxygen
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Answer: __________________
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2.
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40.0% carbon; 6.67% hydrogen; 53.33% oxygen
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Answer: __________________
|
3.
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70.0% iron; 30.0% oxygen
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Answer: __________________
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4.
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10.1% carbon; 0.9% hydrogen; 89.1% chlorine
|
Answer: __________________
|
5.
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12.6% hydrogen; 37.5% carbon; 50.1% oxygen
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Answer: __________________
|
6.
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60.2% terbium; 39.9% chlorine
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Answer: __________________
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7.
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52.8% aluminum; 47.1% oxygen
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Answer: __________________
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8.
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72.41% iron; 27.60% oxygen
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Answer: __________________
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9.
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72.2% magnesium; 27.8% nitrogen
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Answer: __________________
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10
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74.1% carbon; 8.6% hydrogen; 17.3% nitrogen
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Answer: __________________
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Simplest (Empirical) Formula - KEY
Directions:
Find the empirical formula for each of the compounds whose percentage composition is given below.
1.
|
88.8% copper; 11.2% oxygen
|
Answer: _____Cu2O_________
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2.
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40.0% carbon; 6.67% hydrogen; 53.33% oxygen
|
Answer: _____CH2O_________
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3.
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70.0% iron; 30.0% oxygen
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Answer: _____Fe2O3 or (FeO2)_
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4.
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10.1% carbon; 0.9% hydrogen; 89.1% chlorine
|
Answer: _____CHCl3_________
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5.
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12.6% hydrogen; 37.5% carbon; 50.1% oxygen
|
Answer: _____CH3O or (H4CO)_
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6.
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60.2% terbium; 39.9% chlorine
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Answer: _____TbCl3_________
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7.
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52.8% aluminum; 47.1% oxygen
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Answer: _____Al2O3 or (AlO2)__
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8.
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72.41% iron; 27.60% oxygen
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Answer: _____Fe3O4 or (FeO)__
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9
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72.2% magnesium; 27.8% nitrogen
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Answer: ___Mg3N2__________
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10
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74.1% carbon; 8.6% hydrogen; 17.3% nitrogen
|
Answer: __C5H7N___________
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