1. The problem statement, all variables and given/known data 1. Circle all insoluble compounds. (5 pts) (-1 for each incorrect, to a max total of -5) Na3PO4 CaCl2 HgCl2 LiNO3 , PbBr2 , PbCO3 (NH4)3PO4 CuCl2 Fe(OH)2 MgSO4 AgNO3 K2CO3 Given the insoluble compounds, and important exceptions list... how do I follow the question above? 2. Write the balanced net ionic equation for precipitation of CaCO3 when aqueous solutions of Li2CO3 and CaCl2 are mixed. (2 pt) Ca2+ (aq) + CO32- (aq) -> CaCO3 (s) How do I do the question above? What is the things to do in order to write out the net ionic equation? 1. When ammonia is combined with hydrochloric acid, the products are: a. NH4Cl + H2O (correct) b. NH4Cl + OH- + H2 c. NH3Cl + H2O d. NH3Cl + H2 e. NH4Cl + OH- 2. Considering the following reaction, what is undergoing oxidation? Fe + ZnCl2 -> FeCl2 + Zn a. Fe and Cl2 b. Fe and Zn c. Fe (correct) d. Zn e. Cl2 3. Balance the following net ionic redox reaction: Ca + Sb3+ -> Ca2+ + Sb a. Ca + Sb3+ -> Ca2+ + Sb b. 2Ca + Sb3+ -> Ca2+ + 3Sb c. Ca + 2Sb3+ -> 3Ca2+ + Sb d. 3Ca + 2Sb3+ -> 3Ca2+ + 2Sb (correct) e. 2Ca + 3Sb3+ -> 2Ca2+ + 3Sb I've looked around my textbook for examples but couldn't find anything. What chapters or phrases should I be looking for to do these problems? These are study guide questions... and I need to learn how to do them soon.... I'm so lost in my Chem class..