A .150 gram sample of solid lead(II) nitrate is added to 125 mL of .100 M sodium ... .100 M sodium iodide solution. Calculate the number of moles of each reactant? .... 1.51x10 15 atoms Si to mol Si 2. 4.25x10-2 mol H2SO4 to molecules H2SO4 3. .... when 10.2g MnO2 react with 18.3g HCl which is the limiting reactant.