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Balancing Chemical Equations (Grades 11-12)

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Balancing Chemical Equations

1. 
Balance the following: [math]H_2(g)+O_2(g)->H_2O(g)[/math]



2. 
Balance the following: [math]NaClO_3(s)->NaCl(s)+O_2(g)[/math]



3. 
Balance the following: [math]Zn(s)+HCl(aq)->H_2(g)+ZnCl_2(aq)[/math]



4. 
Balance the following: [math]NH_3(g)+O_2(g)->NO(g)+H_2O(aq)[/math]



5. 
Balance the following: [math]C_4H_10(g)+O_2(g)->CO_2(g)+H_2O(g)[/math]



6. 
Balance the following: [math]C_2H_6(g)+O_2(g)->H_2O(g)+CO_2(g)[/math]



7. 
Balance the following: [math]Fe(s)+H_2SO_4(aq)->Fe_2(SO_4)_3(aq)+H_2(g)[/math]



8. 
Balance the following: [math]SeCl_6(s)+O_2(g)->SeO_2(s)+Cl_2(g)[/math]



9. 
Balance the following word equation:
aluminum + oxygen[math]rarr[/math]aluminum oxide



10. 
Nitrogen dioxide and water vapor are combined to manufacture ammonia with a byproduct of oxygen gas. Write the balanced equation for this reaction.



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