Answer:
Glycerin
Step-by-step explanation:
Applying the concept of density, the less dense material stays at the top while the more dense material stays below in the glass.
Density (ρ) = mass / volume
Density of glycerin = 37.8 / 30*10⁻³ = 1260g/l
denisty of corn = 82.8 / 60* 10⁻³ = 1380g/l
from the above calculation, it shows that maize has the highest density and would stay below glycerin in the jar.