Complete the following chemical equations.

$\mathrm{Z}+3{\mathrm{LiAlH}}_{4}\to \mathrm{X}+3\mathrm{LiF}+3{\mathrm{AlF}}_{3}$

$\mathrm{X}+6{\mathrm{H}}_{2}\mathrm{O}\to \mathrm{Y}+6{\mathrm{H}}_{2}$

$3\mathrm{X}+3{\mathrm{O}}_{2}\stackrel{∆}{\to }{\mathrm{B}}_{2}{\mathrm{O}}_{3}+3{\mathrm{H}}_{2}\mathrm{O}$

(i)
(ii)
(iii) $\underset{\left(\mathrm{X}\right)}{{\mathrm{B}}_{2}{\mathrm{H}}_{6}}+3{\mathrm{O}}_{2}\stackrel{∆}{\to }{\mathrm{B}}_{2}{\mathrm{O}}_{3}+3{\mathrm{H}}_{2}\mathrm{O}$