All compounds are of the highest available purity. Metals are cleaned with dilute acid to remove any surface impurities and rinsed with distilled water. Unless otherwise indicated, compounds are dried to a constant weight at 110 o C. Most of these compounds are soluble in dilute acid (1:1 HCl or 1:1 HNO 3 ), with gentle heating if necessary; some of the compounds are water soluble. Element Compound FW (g/mol) Comments aluminum Al metal 26.982 NaN antimony Sb metal 121.760 NaN NaN \(\ce{KSbOC4H4O6}\) 324.920 prepared by drying \(\ce{KSbC4H4O6 * 1/2H2O}\) at 100 °C and storing in a desicator arsenic As metal 74.922 NaN NaN \(\ce{As2O3}\) 197.840 toxic barium \(\ce{BaCO3}\) 197.840 dry at 200 oC for 4 h bismuth Bi metal 208.980 NaN boron \(\ce{H3BO3}\) 61.830 do not dry bromine KBr 119.010 NaN cadmium Cd metal 112.411 NaN NaN CdO 128.400 NaN calcium \(\ce{CaCO3}\) 100.090 NaN cerium Ce metal 140.116 NaN NaN \(\ce{(NH4)2Ce(NO3)4}\) 548.230 NaN cesium \(\ce{Cs2CO3}\) 325.820 NaN NaN \(\ce{Cs2SO4}\) 361.870 NaN chlorine NaCl 58.440 NaN chromium Cr metal 51.996 NaN NaN \(\ce{K2Cr2O7}\) 294.190 NaN cobalt Co metal 58.933 NaN copper Cu metal 63.546 NaN NaN CuO 79.540 NaN fluorine NaF 41.990 do not store solutions in glass containers iodine KI 166.000 NaN NaN \(\ce{KIO3}\) 214.000 NaN iron Fe metal 55.845 NaN lead Pb metal 207.200 NaN lithium \(\ce{Li2CO3}\) 73.890 NaN magnesium Mg metal 24.305 NaN manganese Mn metal 54.938 NaN mercury Hg metal 200.590 NaN molybdenum Mo metal 95.940 NaN nickel Ni metal 58.693 NaN phosphorous \(\ce{KH2PO4}\) 136.090 NaN NaN \(\ce{P2O5}\) 141.940 NaN potassium KCl 74.560 NaN NaN \(\ce{K2CO3}\) 138.210 NaN NaN \(\ce{K2Cr2O7}\) 294.190 NaN NaN \(\ce{KHC8H4O2}\) 204.230 NaN silicon Si metal 28.085 NaN NaN \(\ce{SiO2}\) 60.080 NaN silver Ag metal 107.868 NaN NaN \(\ce{AgNO3}\) 169.870 NaN sodium NaCl 58.440 NaN NaN \(\ce{Na2CO3}\) 106.000 NaN NaN \(\ce{Na2C2O4}\) 134.000 NaN strontium \(\ce{SrCO3}\) 147.630 NaN sulfur elemental S 32.066 NaN NaN \(\ce{K2SO4}\) 174.270 NaN NaN \(\ce{Na2SO4}\) 142.040 NaN tin Sn metal 118.710 NaN titanium Ti metal 47.867 NaN tungsten W metal 183.840 NaN uranium U metal 238.029 NaN NaN \(\ce{U3O8}\) 842.090 NaN vanadium V metal 50.942 NaN zinc Zn metal 81.370 NaN Sources: Smith, B. W.; Parsons, M. L. J. Chem. Educ. 1973 , 50 , 679–681 Moody, J. R.; Greenburg, P. R.; Pratt, K. W.; Rains, T. C. Anal. Chem. 1988 , 60 , 1203A–1218A.