Percentage Composition Worksheet
Calculate the percentage composition of various compounds and practice related stoichiometry problems.
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Percentage Composition Worksheet
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Read each question carefully and calculate the percentage composition for the given compounds. Show all your work.
1. Calculate the percentage composition by mass of each element in water (H₂O).
2. Determine the percentage composition of carbon, hydrogen, and oxygen in glucose (C₆H₁₂O₆).
3. The sum of the percentage compositions of all elements in a compound should always equal .
4. To calculate the percentage composition of an element in a compound, you divide the total mass of the element in the compound by the of the compound and multiply by 100%.
5. Which of the following compounds has the highest percentage by mass of oxygen?
CO₂
SO₂
H₂O
NO₂
6. The empirical formula of a compound can always be used to determine its percentage composition.
True
False
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