Insulin contains 3.4% sulphur. What will be the minimum molecular weight of insulin?

In a gaseous reaction of the type

$\mathrm{aA}+\mathrm{bB}⟶\mathrm{cC}+\mathrm{dD}$,

which statement is wrong?

The equation:

$2{\mathrm{Al}}_{\left(\mathrm{s}\right)}+\frac{3}{2}{\mathrm{O}}_2\left(\mathrm{g}\right)\to {\mathrm{Al}}_2{\mathrm{O}}_{3\left(\mathrm{s}\right)}$ show that:-

If $0.5 \mathrm{mol}$ of ${\mathrm{BaCl}}_2$ is mixed with $0.2 \mathrm{mol}$ of ${\mathrm{Na}}_3{\mathrm{PO}}_4,$ the maximum number of moles of ${\mathrm{Ba}}_3{\left({\mathrm{PO}}_4\right)}_2$, that can be formed is -

$3{\mathrm{BaCl}}_2+2{\mathrm{Na}}_3{\mathrm{PO}}_4\to {\mathrm{Ba}}_3{\left({\mathrm{PO}}_4\right)}_2+6\mathrm{NaCl}$