Final answer:
The substances KI, FeCl₃, and N₂O₅ are named potassium iodide, iron(III) chloride, and dinitrogen pentoxide, respectively, following systematic chemical nomenclature.
Step-by-step explanation:
The substances mentioned by the student are all chemical compounds and have specific names based on their chemical formulas:
- KI is known as potassium iodide.
- FeCl3 is named iron(III) chloride.
- N2O5 is called dinitrogen pentoxide.
These names are based on systematic nomenclature conventions used in chemistry. Potassium iodide is an ionic compound composed of potassium ions and iodide ions, while iron(III) chloride indicates that the iron has a +3 oxidation state and forms an ionic compound with chloride ions. Similarly, dinitrogen pentoxide consists of two nitrogen atoms and five oxygen atoms.