The phrase that describes Air Density is; B: equals mass divided by volume
Calculation of Air Density
Generally, we know that the formula to calculate density is;
Density = Mass/Volume
Thus, when we are referring to air density, we are simply dealing with the mass and volume of air at any particular point or altitude.
Therefore we can conclude that the density of air at any particular point or altitude is expressed as;
Air Density = Mass of Air/Volume of Air
Read more about formula for density at; https://brainly.com/question/13692379
