Question

A gas in an airtight container is heated from ${25}^{\circ }C$ to ${90}^{\circ }C$. The density of the gas will:
( Consider there is a negligible expansion of container)

• A. Increase slightly
• B. Increase considerably
• C. Remain the same
• D. Decrease slightly

Answer 1

Answer: (C)

Remain the same

We know,
$\rho =\frac{M}{V}$
where, $\rho$ is the density, $M$ is the mass and $V$ is the volume.
Since the mass and volume of the gas remain is same, the density of the gas also remains the same.