Question 547617
A drop of oil of volume 1 cubic millimeter spreads out to an area of 1 square meter when placed upon water.
 Assuming the film is 1 molecule thick, what is the approximate size of an oil molecule?
:
1 square meter = 1000^2 = 10^6 sq/millmeter
:
{{{1/10^6}}} = {{{10^-6}}} millimeter thick