Question

Air only has a density of 1.3kg/m². What is the mass of
3m^3 of air?​

Answer 1

m = 3.9 [m³]

Step-by-step explanation:

We must remember that the density of the substance is defined as the relationship between mass over volume. That is expressed in the following equation:

`Ro = m/V`

where:

Ro = density = 1.3 [kg/m³]

m = mass [kg]

V = volume = 3 [m³]

Now replacing the values.

`m =Ro*V\\m = 1.3*3\\\\m=3.9[m^(3)]`