Question

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

Answer 1

Answer:

m = 3.9 [m³]

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.

$m =Ro*V\\m = 1.3*3\\\\m=3.9[m^{3}]$