What is the number of moles of oxygen and number of moles of N atoms respectively present in one mole thymine?

Identify one dimensional nanostructure from following.

What is the general formula of lanthanoid hydroxide? (Consider Ln as any lanthanoid element)

Find the void volume of fcc unit cell in $\mathrm{cm}^3$ if the volume of fcc unit cell $1.25 \times 10^{-22} \mathrm{~cm}^3$.