Final answer:
The volume of the iron(iii) bromide solution is equal to the marked volume of the volumetric flask used in preparing the solution. Since the size of the flask was not provided, the exact volume cannot be determined without that information.
Step-by-step explanation:
The volume of the solution that a chemist prepares can typically be found directly on the volumetric flask used to prepare the solution, because by definition, a volumetric flask is calibrated to contain a specific volume when filled to the mark. Since the student did not provide the nominal volume of the volumetric flask, the exact volume of the iron(iii) bromide solution cannot be stated.
To answer the student's question with the information given, one would need to know the size of the volumetric flask used. The volume is not dependent on the mass of iron(iii) bromide added but rather the mark on the flask to which water is added. Therefore, if the student provides the size of the volumetric flask (for example, 500 mL, 1 L, etc.), the volume of the solution would be equal to that stated volume.