Why do chemists need a number as large as the mole?

If i can still dissolve more sugar into the solution at a certain temperature what would i call that solution

In one or two grammatically correct sentences, write a definition for the term molecule geometry

Iron (fe) reacts with copper sulfate (cuso4) to form iron (ii) sulfate. in this reaction, cu2+ gains electrons to form cu. which statement is true about this reaction? fe(s) + cuso4(aq) → feso4(aq) + cu(s)