The molarity of pure water is $......$

The mole fraction of a solute in a binary solution is $0.1$. At $298 \ K$,molarity of this solution is same as its molality. Density of this solution at $298 \ K$ is $2.0 \ g \ cm^{-3}$. The ratio of molecular weights of the solute and the solvent $(M_{solute} / M_{solvent})$ is:

If the mole fraction of ethanol in a solution of ethanol in water is $0.050$,then find the molarity of the given solution. (in $M$)

$A$ commercially sold concentrated $HCl$ is $35 \%$ $HCl$ by mass. If the density of this commercial acid is $1.46 \ g/mL$,the molarity of this solution is $....M$.
(Atomic mass : $Cl = 35.5 \ amu, H = 1 \ amu$)

Calculate the molarity of ethanol in a solution where the mole fraction of ethanol is $0.040$. (Assume the density of water is $1 \ g/mL$.) (in $M$)

The number of gram molecules of a substance present in unit volume is termed as