Final answer:
To find how many moles of Iron (III) nitrate are involved, one would need the mass of Fe(NO3)3 or the volume and concentration of its solution in order to calculate the moles using molar mass or molarity, respectively.
Step-by-step explanation:
To determine how many moles of Iron (III) nitrate, Fe(NO3)3, were involved in a chemical reaction or present in a solution.
For instance, if given the mass of Fe(NO3)3, you would use the molar mass of Iron (III) nitrate as a conversion factor from grams to moles. Similarly, if you have the volume and concentration of a Fe(NO3)3 solution, you can calculate the number of moles using the equation: moles = volume (L) × molarity (mol/L). Without such information, it is impossible to determine the exact number of moles of Fe(NO3)3.
In relation to the given reference information, using stoichiometry can help calculate the number of moles. For example, if reacting ½ mole of Fe(NO3)3 with an excess of another reactant, you would use the balanced chemical equation to find out how many moles of products or other reactants are involved.