Assuming the following materials will not mix, show how the materials would "stack up" in a graduated cylinder.
air 0.001g/cm3, gycerin 1.26g/cm3,corn syrup g/cm3,wood 0.85 g/cm3,steel7.81g/cm3,rubber 1.34 g/cm3,ice0.94 g/cm3,water 1.0 g/cm 3
corn oil 0.93g/cm3

Density is mass per unit volume.

Its formula is  

Density = Mass / Volume

Its units can be kg/L  or kg/() or g/mL or g/()

Density of various substances are given. The more denser substance goes to the bottom of the graduated cylinder.  

Air on the top then comes  Wood followed by  Corn oil followed by  Ice and then  Water followed by  Glycerin then  Rubber then  Corn syrup and at last  Steel at the bottom  which will more denser than all the substances mentioned above.

The staking up of the substances is in the order mentioned below in the tabular column

it means there are 3 atoms of oxygen

i don't see a text, but i am gonna assume this *orbit* the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.