Unit 4 Benchmark #2 - Balancing Equations (Version B)

Gap-fill exercise

Enter your answers in the gaps. Every space will require a coefficient. Unlike when we balance equations in class, you will have to include coefficients of "one" by typing in a value of "1." When you have entered all the answers, click on the "Check" button.
1.       CaO + H2O → Ca(OH)2

2.       Ca + O2 → CaO

3.       Cu + S8 → CuS

4.       Al + O2 → Al2O3

5.       BaCO3 → BaO + CO2

6.       Ni(ClO3)2 → NiCl2 + O2

7.       H2SO4 → H2O + SO3

8.       Ag2O → Ag + O2

9.       Mg + HNO3 → Mg(NO3)2 + H2

10.       K + H2O → KOH + H2

11.       Ca + HCl → CaCl2 + H2

12.       AgNO3 + Ni → Ni(NO3)2 + Ag

13.       NH4Cl + Hg2(C2H3O2)2 → NH4C2H3O2 + Hg2Cl2

14.       Ca(NO3)2 + HCl → CaCl2 + HNO3

15.       FeS + HCl → FeCl2 + H2S

16.       Cu(OH)2 + HC2H3O2 → Cu(C2H3O2)2 + H2O

17.       C4H10 + O2 → CO2 + H2O

18.       C5H12 + O2 → CO2 + H2O

19.       C6H14 + O2 → CO2 + H2O

20.       C2H4 + O2 → CO2 + H2O