Each of the following substances is soluble in water. Write the formula of each. Tell how many ions are made when each dissolves in water. [e.g. sodium carbonate dissociates into three ions, two sodium ions, 2 Na⁺ and one carbonate ion CO₃²⁻]
a) cobalt (III) bromide
b) magnesium acetate
c) barium chloride
d) titanium (IV) nitrate
e) ammonium sulfate