$$ \text { IUPAC name of the following compound is } $$

The empirical formula weight of ' $Z$ ' in the given reaction sequence is

$$ n \text {-propyl bromide } \xrightarrow[\text { Dry ether }]{\mathrm{Na}} X \xrightarrow[\substack{773 \mathrm{~K} \\ 20 \mathrm{~atm}}]{\mathrm{v}_2 \mathrm{O}_5} Y \xrightarrow[\text { UV } 500 \mathrm{~K}]{\mathrm{Cl}_2} Z $$

If AgCl is doped with $1 \times 10^{-4}$ mole percent of $\mathrm{CdCl}_2$ the number of cation vacancies (in $\mathrm{mol}^{-1}$ ) is

In aqueous glucose solution, the mole fraction of wate is 40 times to mole fraction of glucose. What is the weight percentage $(w / w)$ of glucose in the solution?