Which gas volume is measured in a sample by using a solution of $CuCl$ in $NH_4OH$ through the measurement of volume change?

The density of a gas at $STP$ is $2.86 \, g \, L^{-1}$. Which gas is it?

Pressure exerted by saturated water vapour is called aqueous tension. What correction term will you apply to the total pressure to obtain the pressure of dry gas?

State Dalton's Law of partial pressure,provide its mathematical formula,and explain aqueous tension.

$x \ g$ of molecular oxygen $(O_2)$ is mixed with $200 \ g$ of neon $(Ne)$. The total pressure of the nonreactive mixture of $O_2$ and $Ne$ in the cylinder is $25 \ bar$. The partial pressure of $Ne$ is $20 \ bar$ at the same temperature and volume. The value of $x$ is $....$ [Given: Molar mass of $O_2 = 32 \ g \ mol^{-1}$. Molar mass of $Ne = 20 \ g \ mol^{-1}$]

Assertion: Standard boiling point of a liquid is slightly higher than the normal boiling point. Reason: $1 \ bar$ pressure is slightly less than $1 \ atm$ pressure.