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10 drops of an oleic acid solution of co...

10 drops of an oleic acid solution of concentration `1/400cm^(3)percm^(3)` of alcohol, are dropped on a water surface. The circular film thus produced has radius 10 cm. Find the molecular size of oleic acid, if the radius of each drop is 1.4 mm.

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`t="nV"/"400A"` or `9.15xx10^(-9)` m
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