Haemoglobin contains $0.33\%$ of iron by weight. The molecular weight of haemoglobin is approximately $67,200$. The number of iron atoms (Atomic weight of $\mathrm{Fe}=56$) present in one molecule of haemoglobin is 

In the reaction,

$2{\mathrm{SO}}_2+{\mathrm{O}}_2\to 2{\mathrm{SO}}_3$

when $1$ mole of ${\mathrm{SO}}_2$ and $1$mole of ${\mathrm{O}}_2$ are made to react to completion

Consider the following reaction sequence:

${\mathrm{S}}_8\left(\mathrm{s}\right)+8{\mathrm{O}}_2\left(\mathrm{g}\right)\to 8{\mathrm{SO}}_2\left(\mathrm{g}\right)$

$2{\mathrm{SO}}_2\left(\mathrm{g}\right)+{\mathrm{O}}_2\left(\mathrm{g}\right)\to 2{\mathrm{SO}}_3\left(\mathrm{g}\right)$

How many grams of ${\mathrm{SO}}_3$ are produced in $1$ $\mathrm{mole}$ ${\mathrm{S}}_8$ ?