Describe one property of sand that would enable the student to separate the sand from
the other components in mixture b.

Sand, unlike ammonium chloride is insoluble in water

Explanation:

Unlike ammonium chloride , sand does not dissolve in water so. So sand can be separated from the mixture by just filtering the mixture, and the sand would be the residue that can be dried and the ammonium chloride solution would be the filtrate.