Which of the following is an example of a single replacement reaction 2Ag + S --> AG2S 2Ag + S --> AG, 2, S Zn + 2HCl --> ZnCl2 + H2 Zn + 2HCl --> ZnCl, 2, + H, 2 FeCl2 + Na2CO3 --> 2NaCl + H2O FeCl, 2, + Na2CO, 3, --> 2NaCl + H, 2, O 2H2O2 + 2H2O + O2