$A$ $1000 \ g$ aqueous solution of $CaCO_3$ contains $10 \ g$ of calcium carbonate. The concentration of the solution in $ppm$ is .........

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

$A$ $2.0 \, M$ solution is obtained when $0.5 \, mole$ of solute is dissolved in:

The density of a $2.05 \ M$ solution of acetic acid $(CH_3COOH)$ in water is $1.02 \ g \ mL^{-1}$. The molality of the solution is ......... $mol \ kg^{-1}$.

By dissolving $0.35 \, \text{mole}$ of sodium chloride in water,$1.30 \, \text{L}$ of salt solution is obtained. The molarity of the resulting solution should be reported as $..... \, \text{M}$.

When $100 \ mL$ of $0.3 \ N$ $HCl$ solution is mixed with $200 \ mL$ of $0.6 \ N$ $H_2SO_4$ solution,what is the normality of $H_2SO_4$ in the final mixture?