What would be the molality of $20\%$ (mass/mass) aqueous solution of $KI$? (Molar mass of $KI = 166 \, g \, mol^{-1}$)

The amount of sugar $(C_{12}H_{22}O_{11})$ required to prepare $2 \ L$ of its $0.1 \ M$ aqueous solution is ............... $g$.

Molality of an aqueous solution of urea is $4.44 \ m$. Mole fraction of urea in solution is $x \times 10^{-5}$. Value of $x$ is. . . . . . (integer answer)

The amount of water that should be added to $500 \, mL$ of $0.5 \, N$ solution of $NaOH$ to give a concentration of $10 \, mg$ per $mL$ is (in $, mL$)

$A$ sample of drinking water is found to be severely contaminated with chloroform $(CHCl_3)$,which is a suspected carcinogen. The level of contamination is $15 \ ppm$ (by mass). Calculate the molarity of chloroform in the water sample.

If a solution is $98\% \ H_2SO_4$ by weight and has a density of $1.8 \ g/mL$,its molarity is ....... $M$.