Percent Composition Of Chemical Compounds

8 Questions | Total Attempts: 2242

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Percent Composition Of Chemical Compounds

Chemical compounds are made up of chemical elements which have different numbers attached to them. This quiz is designed to test your knowledge on the chemical elements and as a result calculation of percent composition of chemical compounds.


Questions and Answers
  • 1. 
    What are the percent composition for SF2?
    • A. 

      55 % Sulfur and 45% Fluorine

    • B. 

      45.76% Sulfur and 54.39 % Fluorine

    • C. 

      33% Sulfur and 67% Fluorine

    • D. 

      49.2 % Sulfur and 50.8 % Fluorine

  • 2. 
    What is the percent composition of Ethyne? C2H2?
    • A. 

      92.31% Carbon and 7.76% Hydrogen

    • B. 

      82% Carbon and 18% Hydrogen

    • C. 

      82.7% Carbon and 17.3 % Hydrogen

    • D. 

      90% Carbon and 14 % Hydrogen

  • 3. 
    What is the percentage of Sulfur in SF2?
    • A. 

      32.06 % Sulfur

    • B. 

      25% Sulfur

    • C. 

      70.06 % Sulfur

    • D. 

      62.67 % Sulfur

  • 4. 
    . What is the empirical formula for a compound that contains 1.67 mole Carbon and 5.01 Moles of Hydrogen
    • A. 

      CH

    • B. 

      CH2

    • C. 

      C2H3

    • D. 

      CH3

  • 5. 
    What is the empirical formula for a compound that contains 5.28 moles Oxygen, 1.32 moles Sulfur and 2.64 moles Hydrogen
    • A. 

      HSO

    • B. 

      H2SO2

    • C. 

      H2SO4

    • D. 

      HSO2

  • 6. 
    What is the empirical formula for a compound that contains 22.00 % N and 78.0 % O
    • A. 

      N2O5

    • B. 

      NO3

    • C. 

      N2O3

    • D. 

      N)2

  • 7. 
    What is the empirical formula for a compound that contains 37.69% Na and 62.31 % Fluorine?
    • A. 

      NaF3

    • B. 

      Na2F

    • C. 

      NaF

    • D. 

      NaF2

  • 8. 
    What is the empirical formula for: 85.60% C and 14.40% H?
    • A. 

      C2H3

    • B. 

      CH2

    • C. 

      CH3

    • D. 

      C2H4

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