# Answer to Question #3754 in Mechanics | Relativity for Mia

Question #3754

A drop of oil with a volume of 0.003 cubic mm has spread out over the surface of water in a

monomolecular layer and has covered 300 quadratic cm. Find the diameter of the molecules.

monomolecular layer and has covered 300 quadratic cm. Find the diameter of the molecules.

Expert's answer

V=0.003 mm

S=300 cm

It’s obvious that if we multiply the area covered with oil one molecule thick on the diameter of one molecule then we get the volume of oil :

Sd=V

Thus

d = V/S = (3×10

^{2}=3×10^{-15}m^{2}S=300 cm

^{2}=3×10^{-2}m^{2}It’s obvious that if we multiply the area covered with oil one molecule thick on the diameter of one molecule then we get the volume of oil :

Sd=V

Thus

d = V/S = (3×10

^{-15}m^{2}) / (3×10^{-2}m^{2}) = 10^{-13}m = 0.0001 nm
## Comments

Assignment Expert09.08.11, 18:55Welcome!

Mia03.08.11, 17:48Thank you so much because I struggle in physics and I must have this class before I can go to college which is arriving shortly

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