The molality of an aqueous solution of glucose is $1.0 \ m$. The mole fraction of glucose is approximately .....

The concentration of $1 \ L$ of $CaCO_3$ solution is $1000 \ ppm$. What is its concentration in $mol \ L^{-1}$ ?
$(Ca=40 \ u, O=16 \ u, C=12 \ u)$

If the molarity and molality of an aqueous solution of $H_2SO_4$ are $1.56 \ M$ and $1.8 \ m$ respectively,what is the density of the solution in $g/mL$?

$10 \ g$ of a solute is dissolved in $90 \ g$ of a solvent. Its mass percent in solution is

The density of $NaOH$ solution is $1.2 \, g \, cm^{-3}$. The molality of this solution is $.... \, m$ (Round off to the nearest integer). [Use: Atomic masses: $Na: 23.0 \, u, O: 16.0 \, u, H: 1.0 \, u$]

Which concentrations can be calculated if the mole fraction and density of an aqueous solution of $HCl$ are known? $1.$ Molality $2.$ Molarity $3.$ Percentage by mass