<PRE><B>Question 212578</B>
One cubic millimeter of oil is spread on the surface of the water so that the surface of water so that the oil film has an area of 1 square meter.

What is the thickness of the oil film in angstrom units?
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1 sq meter = 1,000,000 sq mms
Vol = Area*thickness
1 mm^3 = 1000000*t
t = 0.000001 mm = 1E-6 mm
1 Angstrom = 1E-10 meters = 1E-7 mms
t = 10 Angstroms
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Angstrom is not in common use any more, nanometers are more common.
nano = billionth = 1E-9
We use meters, millimeters, microns (1 millionth of a meter), nanometers, picometers.</PRE>