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What is the volume of the oleic acid film if one drop of 0.5% solution of...

What is the volume of the oleic acid film if one drop of 0.5% solution of oleic acid in ethanol is suspended on a water surface by usuing a micro pipet having an average of 195 drops per millimeter?

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Assuming that average number of drops of 195 is for 1 millilitre and not one millimeter ast average number of drops per millimeter doesnt signify anything.

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