Balancing Equations

10 Questions | Total Attempts: 45

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Balancing Equation Quizzes & Trivia

Balancing Equations Study the equation. Determine what number should replace the question mark. Write the correct number that would correctly balance the equation.


Questions and Answers
  • 1. 
    Ca3(PO4)2   +           3H2SO4   →           CaSO4    +         ? H3PO4
  • 2. 
    4Si2H3    +    ? O2   →      8SiO2        +   6H2O
  • 3. 
    P4   +       5O2   →     ? P2O5
  • 4. 
    P4O10    +        ? H2O   →      4H3PO4
  • 5. 
    2C2H2   +     ? O2  →      4CO2   +        2H2O
  • 6. 
    C3H6O +       ? O2      3CO2 +     3H2
  • 7. 
     ? H2  +        CO    →         CH3OH
  • 8. 
     2MgI2 +       Mn(SO3)2  --->     ? MgSO3 +     MnI4 
  • 9. 
     SeCl6 +          O2         SeO2 +      ? Cl2 
  • 10. 
    S    +     ? O2  --->    8SO