What is the mass of glucose in $500 \ g$ of an aqueous solution of glucose with a molality of $0.5 \ m$?

The molarity of the solution prepared by dissolving $6.3 \ g$ of oxalic acid $(H_{2}C_{2}O_{4} \cdot 2H_{2}O)$ in $250 \ mL$ of water in $mol \ L^{-1}$ is $x \times 10^{-2}$. The value of $x$ is ..... . (Nearest integer)
[Atomic mass : $H: 1.0, C: 12.0, O: 16.0]$

When $120 \ g$ of urea (molar mass $= 60 \ g/mol$) is dissolved in $1000 \ g$ of water,the density of the resulting solution is $1.15 \ g/mL$. The molarity of this solution is ........ $M$.

$A$ mixture of camphor in air is an example of which type of solution?

How many $cc$ of water should be added to $200 \ cc$ of $seminormal$ $NaOH$ solution to make it $decinormal$?

What is the molarity of the solution formed by adding $3 \, L$ of $0.5 \, M$ $NaOH$ solution to $2.5 \, L$ of $1 \, M$ $NaOH$ solution?