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.

Expert's answer

V=0.003 mm^{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

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

## Comments

Assignment Expert09.08.11, 19:55Welcome!

Mia03.08.11, 18:48Thank 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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