Ch 7-1 Balancing Chemical Equations 1

Name__________________ Balancing Chemical Equations 1 1) _____Ca + _____O2  _____ CaO Ca = Ca = O= O= 2) _____N2 + _____H2  _____ NH3 N= N= H= H= 3) _____Cu2O + _____C  _____Cu + _____CO2 Cu = Cu = O= O= C= C= 4) _____H2O2  _____H2O + _____O2 H= H= O= O= 5)

____ Pb(OH)2 + ____ HCl  ____ H2O + ____ PbCl2

6)

____ HNO3 + ____ NaHCO3  ____ NaNO3 + ____ H2O + ____ CO2

7) ____ H2O + ____ O2  ____ H2O2

8) ____ NaBr + ____ CaF2  ____ NaF + ____ CaBr2

9) ____ H2SO4 + ____ NaNO2  ____ HNO2 + ____ Na2SO4 10) Methane, CH4, burns in oxygen gas to form water and carbon dioxide. Balance this problem