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Homework:
Balancing Chemical Equations 1

Answer the following questions using complete sentences. Rephrase the question as part of your answer.

For example, Question: What should I do to get a good grade? Answer: To get a good grade you should pay attention, work hard, and hand your work in on time.

  1. Is it possible to balance the following chemical equation? Why or why not? Please explain in detail using your understanding of chemical laws.
    Zn +      O2 Arrowsngl     Fe2O3
  2. What is the point of balancing a chemical equation?
  3. What is an algorithm? Can a simple algorithm be written to solve every chemical equation balancing problem? How can solving these problems apply to real life?

Balancing Chemical Equations

Balance the following chemical equations using what you know about the conservation of matter in chemical changes. Combustion reactions are written by adding O2 as a reactant and carbon dioxide and water as the only products.

  1.     MgO +     Al Arrowsngl     Mg +     Al2O3
  2.     K2O +     H2O Arrowsngl     KOH
  3.     Na2O2 +     H2O Arrowsngl     NaOH +     O2
  4.     H3AsO4 Arrowsngl     As2O5 +     H2O
  1.     C7H16 +     O2 Arrowsngl     CO2 +     H2O
  2.     C10H16 +      Cl2 -->      C +      HCl
  3.     C3H8 +      O2 Arrowsngl      CO2 +      H2O
  4.     H2S +     Cl2 Arrowsngl     S8 +     HCl


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  1.     Al +     H2O +     NaOH Arrowsngl     NaAlO2 +     H2
  2.     Al2(SO4)3 +     Ca(OH)2 Arrowsngl     Al(OH)3 +     CaSO4
  3.     NaOH +      Cl2 -->     NaCl +     NaClO +     H2O
  4.      Cr2O3 +      CO -->      Cr +      CO2
  5. The combustion of C2H4
  6. The combustion of butane (C4H10).
This homework belongs with the Chemical Equations Group Activity
Last updated: Jun 09, 2009 Home