ch.1 balancing equations

Select the correct balanced equation for the following equation                                                                                                                                                               NO + O2 → NO2

• NO + 2O2 → NO2

• NO + O2 → 2NO2

• 2NO + O2 → 2NO2

• NOTA

Select the correct balanced equation  for the following equation                 ZnS + O2 → ZnO +  SO2

• ZnS + O2 → ZnO + SO2

• 2ZnS + 3O2 → 2ZnO + 2 SO2

• ZnS + 2O2 → ZnO + SO2

• NOTA

Select the correct balanced equation  for the following equation                   MnO2 + HCl → MnCl2 +  H2O +  Cl2

• MnO2 + 2HCl → MnCl2 + H2O + Cl2

• MnO2 + 2HCl → MnCl2 + H2O + 2 Cl2

• 2MnO2 + 2HCl → MnCl2 + H2O + Cl2

• MnO2 + 4HCl → MnCl2 + 2H2O + Cl2

Select the correct balanced equation  for the following equation                N2 + H2 ⇌ NH3

• N2 + H2 ⇌ NH3

• N2 + 3H2 ⇌ 2NH3

• 2N2 + H2 ⇌ 2NH3

• N2 + H2 ⇌ 2NH3

Select  the correct balanced equation for the given equation: NH3 + CuO → Cu + H2O +  N2

• NH3 + CuO → Cu + H2O + N2

• 2NH3 + 3CuO → 3Cu + 3H2O + N2

• 2NH3 + 2CuO → 2Cu + 3H2O + 2 N2

• NH3 + 3CuO → 3Cu + H2O + N2