At higher altitudes,the boiling point of water lowers because:

$A$ mixture of equal masses of two gases with molecular weights $4$ and $40$ has a total pressure of $1.1 \, atm$. The partial pressure of the lighter gas in the mixture is ............ $atm$.

What is the absolute or Kelvin temperature scale?

Equal masses of helium and oxygen are mixed in an empty container at $25^{\circ} C$. What is the fraction of the total pressure exerted by helium?

Pressure-volume $(pV)$ work done by an ideal gaseous system at constant volume is (where $E$ is internal energy of the system):

Calculate the ratio of the effusion of $CO$ and $N_2$,when temperature and pressure gradients are held constant?