Identify the product when magnesium burns in air.

Calculate the total number of tetrahedral and octahedral voids in 0.4 mol compound having such voids in it.

Which carbon atom of glucopyranose numbered from $\mathrm{C}-1$ to $\mathrm{C}-6$ is anomeric?

Calculate molality of the solution containing nonvolatile solute if boiling point elevation of the solution is 0.2 K

$$ \left[\mathrm{K}_{\mathrm{b}}=0.52 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}\right] $$