In a solution of a solute in benzene with a molality of $x \ m$,the mole fraction of the solute is $0.2$. The value of $x$ is ...... .

The density (in $g \ mL^{-1}$) of a $3.60 \ M$ sulphuric acid solution that is $29 \% \ H_2SO_4$ (Molar mass $= 98 \ g \ mol^{-1}$) by mass will be

$6 \ g$ of urea (molar mass $= 60 \ g \ mol^{-1}$) and $9 \ g$ of glucose (molar mass $= 180 \ g \ mol^{-1}$) were dissolved in $35 \ g$ of water. The mass percent of urea and glucose is respectively:

The correct relationship between molality $(m)$ and molarity $(M)$ of a solution is ($d = $ density in $g/mL$ and $M_{solute} = $ molar mass of solute in $g/mol$)

If $15 \ g$ of $NaOH$ is dissolved in water to make $250 \ mL$ of solution,find the molarity of this solution in $M$.

The quantity which changes with temperature is: