Question

A cubic box has a 0.6 cubic decimetre side. Find the mass of air in the box in gram. (1 Liter of air has a mass of 1.3 g).

Answer 1

Answer:

The mass of air in the box is 0.78 grams.

Explanation:

A litre equals a cubic decimetre. By definition of density ($\rho$), in grams per litre, we calculate the mass of air inside the cube ($m$), in grams:

$m = \rho \cdot V$ (1)

Where $V$ is the volume occupied by air within the cube, in litres.

If we know that $V = 0.6\,L$ and $\rho = 1.3\,\frac{g}{L}$, then the mass of air is:

$m = \left(1.3\,\frac{g}{L} \right)\cdot (0.6\,L)$

$m = 0.78\,g$

The mass of air in the box is 0.78 grams.