# 10 ml of 1mM surfactant solution forms a monolayer covering

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?

1. $2.0 \mathrm{pm}$

2. $2.0 \mathrm{~nm}$

3. $1.0 \mathrm{pm}$

4. $0.1 \mathrm{~nm}$

Correct Option: 1

Solution: