Question: $10 \mathrm{~mL}$ of $1 \mathrm{mM}$ surfactant solution forms a monolayer covering $0.24 \mathrm{~cm}^{2}$ on a polar substrate. If the polar head is approximated as cube, what is its edge length?
$2.0 \mathrm{pm}$
$2.0 \mathrm{~nm}$
$1.0 \mathrm{pm}$
$0.1 \mathrm{~nm}$
Correct Option: 1
Solution: