The density of neon will be highest at

where n= Rearranging the equation, we have PM= Mass (w) where d, density= (V) PV nRT n w V RT P M w V RT PM w RT V PM dRT Volume >> >> PM d RT The increase in pressure of any gas leads to compression which in turn increases the density of gas. Similarly low temperature leads to more density. Therefore, Neon has maximum density at 2atm pressure and 273 K temperature. Dalton's law of partial pressure