1) When each of the following pairs of aqueous solutions is mixed, does a precipitation reaction occur? If so, write the formula and name of the precipitate. (Type your answer using the format CO2 for CO2. Type NONE in the blanks if there is no precipitation reaction.)
(a) lead(II) nitrate + potassium bromide
2) How many total moles of ions are released when each of the following samples dissolves completely in water 6.004 1021 formula units of NiCl2?