The reason for the change in concentration of an aqueous solution with an increase in temperature is......

The molality of $15\% \,(w/V)$ solution of $H_2SO_4$ with density $1.1\, g/cm^3$ is

$50 \ mL$ of an aqueous solution of glucose contains $6.02 \times 10^{22}$ molecules. The concentration of the solution is? ........... $M$

The number of moles of a solute in its solution is $20$ and the total number of moles is $80$. The mole fraction of the solute is:

The solutions $A$ and $B$ are $0.1 \ M$ and $0.2 \ M$ in a substance. If $100 \ mL$ of $A$ are mixed with $25 \ mL$ of $B$ and there is no change in volume,then the final molarity of the solution is ......... $M$.

$63 \ g$ of a compound (Mol. Wt. $= 126$) was dissolved in $500 \ g$ of distilled water. The density of the resultant solution is $1.126 \ g / mL$. The molarity of the solution is: (in $M$)