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Answers. SR 1a) Zn + Pb(NO 3 ) 2  Zn(NO 3 ) 2 + Pb b) 2K + Ba(C 2 H 3 O 2 ) 2  2KC 2 H 3 O 2 + Ba c) 2Al + 3NiSO 4  Al 2 (SO 4 ) 3 + 3Ni d) 2Na + 2HOH  2NaOH + H 2 2a) Ca + PbSO 4  CaSO 4 + Pb b) Sr + 2AgNO 3  Sr(NO 3 ) 2 + 2Ag c) Fe + Ni(NO 3 ) 2  Fe(NO 3 ) 2 + Ni

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  1. Answers SR 1a) Zn + Pb(NO3)2 Zn(NO3)2 + Pb b) 2K + Ba(C2H3O2)2  2KC2H3O2 + Ba c) 2Al + 3NiSO4  Al2(SO4)3 + 3Ni d) 2Na + 2HOH  2NaOH + H2 2a) Ca + PbSO4  CaSO4 + Pb b) Sr + 2AgNO3  Sr(NO3)2 + 2Ag c) Fe + Ni(NO3)2  Fe(NO3)2 + Ni d) 2Al + 3Pb(NO3)2  3Pb + 2Al(NO3)3 e) 2Rb + 2HOH  2RbOH + H2

  2. DR 1a) AgNO3 + NaCl  AgCl + NaNO3 b) Mg(NO3)2 + 2KOH  Mg(OH)2 + 2KNO3 c) (NH4)2S + ZnCl2  ZnS + 2NH4Cl d) 3LiOH + Fe(NO3)3  3LiNO3 + Fe(OH)3 2a) Cu(NO3)2 + Na2S  2NaNO3 + CuS b) ZnCl2 + 2LiOH  2LiCl + Zn(OH)2 c) Pb(NO3)2 + (NH4)2CO3  2NH4NO3 + PbCO3 d) Al(NO3)3 + 3NaOH  Al(OH)3 + 3NaNO3

  3. Combustion 1a) CH4 + 2O2 CO2 + 2H2O b) 2C3H6 + 9O2 6CO2 + 6H2O c) C5H12 + 8O2 5CO2 + 6H2O d) C3H8 + 5O2 3CO2 + 4H2O e) 2C4H10 + 13O2 8CO2 + 10H2O

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