What is the name of [Co(SCN)2(H2O)4]+?
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tetraquadithiocyano cobaltate(III)\n\nThat's tetraqua dithiocyano, which looks confusing because it has a "quad" in it if there's no space. It comes from the four waters (tetraqua) and the two thiocyanates (dithiocyano). Put the anion after the name with a space.\n\nBy the way, the only reason there's a space between cyanocobaltate is because Yahoo Answers cuts off a long word and replaces it with "...". Not sure why.
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Cu (s) + Pb(NO3)2 (aq) ---------> No Reaction. \nCopper will not replace lead.\n\nreaction VI in the attached link.
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3K4Fe(CN)6 + 4FeCl3 -> 12KCl + Fe4[Fe(CN)6]3
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Ferric monohydroxide pentahydrate ion\n\nor\n\nIron (III) monohydroxide pentahydrate ion
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1) H3COCH3 (or C2H6O) + 3O2 (g) --> 2CO2 (g) + 3H2O (g)\n2) HNO2 (aq) + NaOH (aq) <--> NaNO2 (aq) + H2O (l)\n3) 2K+ + Cr2O7(2-) + Fe(NO3)2 + 2H+ <--> CrO4(-) + Fe3+ + 2K+ + 2NO3(-) \n4) Na3PO4 + NH4NO3 = No reaction, all soluble salts.\n5) 2HCl (aq) + Na2S (s) --> 2NaCl (aq) + H2S (g)
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Here is one example ,\n\nAgNO3(aq) + NaCl(aq)-> AgCl(s)white precipitate + NaNO3(aq)
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K2S + COCl2 --> 2KCl + COS
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Ionic : NaCl (sodium chloride)\n          NaBr (sodium bromide)\n          NH4Cl (ammonium chloride)\n\nCovalent: H2O (dihyrdogen monoxide)\n                SO2 (Sulfur dioxide)\n                CO (carbon monoxide)
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bcd\n\n\n\nSolution:\nCaCN2 + 3H2O ---> 2NH3 + CaCO3
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Silver Carbonate  - AgCO3 (3 being the small number on teh O)\nSilver Nitrate - AgNO3\nSilver Sulphate - Ag2SO4
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1) ZnNO2\n2) Co(HSO3)3\n3) HgF\n4) Al2(CO3)3\n5) CeC2O4\n6) BaClO\n7) SnBr2\n8) Mg(HSO3)2
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CoCl2(aq) + FeSO4(aq) = CoSO4 (aq) + FeCl2(aq)
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Cobalt cyanide. Read all about it here:
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Covalent bonds, as in NH4+
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Lead (II) bicarbonate is Pb(HCO3)2.\nPb(CO3) is lead (II) carbonate.\n\nNote bicarbonate is a common name.  Hydrogen carbonate is a better name.  Note that if you said just lead bicarbonate there can be confusion.  It could be\n\nPb(II)(HCO3)2 or Pb(IV)(CO3)2 depending on how you interpret the "bi".
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The formula would be Al2(CO3)3; the numbers are subscripts. \n\nLearn your charges for the polyatomic ions and for the other elements, it will really help.
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PH3:                           Phosphine\nAg2SO3:                    Silver Phosphite\nFeCO3:                      Iron(II) Carbonate\nN2O4:                        Dinitrogen tetroxide\nPb(OH)2:                   Lead(II) Hydroxide