Which from following is NOT a globular protein?

Calculate percentage atom economy when 46 g ethanol is obtained from 64.5 g chloroethane and $56 \mathrm{~g} \mathrm{KOH}_{(\mathrm{aq})}$.

The solubility product of the sparingly soluble salt $\mathrm{AB}_2$ is $2.56 \times 10^{-10}$ at 298 K . Calculate its solubility in $\mathrm{mol} \mathrm{dm}^{-3}$ at the same temperature?