Balancing Chemical Equations Worksheet 1. _____ H2 + _____ O2 ? _____ H2O 2. _____ N2 +_____ H2 ?_____ NH3 3. _____ S8 + _____ O2 ? _____ SO3 4. _____ N2 + _____ O2 ? _____ N2O 5. _____ HgO ? _____ Hg + _____ O2 6. _____ CO2 + _____ H2O ? _____ C6H12O6 + _____ O2 7. _____ Zn + _____ HCl ? _____ ZnCl2 + _____ H2 8. _____ SiCl4 + _____ H2O ? _____ H4SiO4 + _____ HCl 9. _____ Na + _____ H2O ? _____ NaOH + _____ H2 10. _____ H3PO4 ? _____ H4P2O7 + _____ H2O 11. _____ C10H16 + _____ Cl2 ? _____ C + _____ HCl 12. _____ CO2 + _____ NH3 ? _____ OC(NH2)2 + _____ H2O 13. _____ Si2H3 + _____ O2 ? _____ SiO2 + _____ H2O3 14. _____ Al(OH)3 + _____ H2SO4 ? _____ Al2(SO4)3 + _____ H2O