Which gas has the highest partial pressure in atmosphere?

At relatively high pressure, van der Waals’ equation reduces to:

An open vessel at 27\,^\circ C  is heated until 3/8th of the air in it has been expelled. Assuming that the volume remains constant, calculate the temperature at which the vessel was heated

The equation of state corresponding to 8g of ${{\rm{O}}_2}$ is

Two separate containers of equal volume V contain ideal gases A and B at the same temperature T. The molar mass of A is twice that of B. The ratio of the densities of A and B ($\rho_A / \rho_B$) is:

An ideal gas expands according to $PV =$ constant. On expansion, the temperature of gas:

1.0 L of ${N_2}$ and 7/8 L of ${O_2}$ at the same temperature and pressure were mixed together. What is the relation between the masses of the two gases in the mixture?

A preweighted vessel was filled with ${\rm{C}}{{\rm{O}}_2}$ at STP and weighed. It was then evaluated, filled with ${\rm{S}}{{\rm{O}}_2}$ at the same temperature and pressure and again weighted. The weight of the ${\rm{C}}{{\rm{O}}_2}$ will be

At NTP, the density of a gas, whose molecular weight is 45, is

When a sample of gas is compressed at constant temperature from 15 atm to 60 atm, its volume changes from $76\,\,{\rm{c}}{{\rm{m}}^3}\,\,{\rm{to}}\,\,20.5\,\,{\rm{c}}{{\rm{m}}^3}$. Which of the following statements are possible explanations of this behaviour? 1. The gas behaves non-ideally. 2. The gas dimerises. 3. The gas is absorbed into the vessel walls.

density of Neon is maximum at