Question

A sample of a perfect gas occupies a volume V at a pressure P and absolute temperature T. The mass of each molecule is m. Which of the following expressions gives the density of the gas ?

• A. mkT
• B. $\frac{m}{V}$
• C. $\frac{Pm}{kT}$
• D. $\frac{P}{kTV}$

Answer 1

Answer: (C)

$\frac{Pm}{kT}$

Answer 2

Use PV = mRT