Q.
If $p\ $is the pressure, $V$ the volume, $R$ the ags constant, $k\ $the Boltzmann’s constant and $T$ the absolute temperature, then the number of molecules in the given mass of the gas is given by
A) $\frac{pV}{RT}$
B) $\frac{pV}{kT}$
C) $\frac{pR}{T}$
D) $pV$
Explanation
(b) In a given mass of the gas
$n = \frac{pV}{kT}$
$k\ $ being Boltzmann’s constant.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.