What substance has a mass of 9.5 grams and a volume of 2.1 cm^3?
SUBSTANCE.

Explanation:

Given parameters:

Mass  = 9.5g

Volume  = 2.1cm³

Unknown:

What kind of substance is this = ?

Solution:

To determine the kind of substance given, we need to find its density from the given parameters.

The density of a substance can tell us about such body.

Density is an intensive property and it is the mass per unit volume.

       Density  =

Now insert the parameters and solve;

    Density  =  = 4.52g/cm³

The substance will most likely be a solid.

altitude, density, pressure

air gets less dense the higher the altitude and also the air pressure is less as altitude rises.