3. Balance the following equations: Zn + HCl -----------> ZnCl2 + H2 Na + HCl -----------> NaCl + H2 Al + O2 ------------> Al2O3 Ag2O ---------------> Ag + O2 Ca + N2 ------------> Ca3N2 NO + O2 ------------> NO2 SO2 + O2 ------------> SO3 P4+ O2 ------------> P2O5
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Zn + 2HCl -----------> ZnCl2 + H2
2Na + 2HCl -----------> 2NaCl +H2
4Al + 3O2 ------------> 2Al2O3
2Ag2O --------------->4Ag + O2
3Ca + N2 ------------> Ca3N2
2NO + O2 ------------> 2NO2
2SO2 + O2 ------------> 2SO3
P4+ 5O2 ------------> 2P2O5
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