What is the estimated width of stearic acid molecules in water?

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SUMMARY

The estimated width of a stearic acid molecule in water is approximately 3 to 4 angstroms (Å). This measurement is crucial for experiments determining Avogadro's number, particularly when calculating the area covered by stearic acid on water's surface. The accuracy of this width directly impacts the results of such experiments, as it influences the calculations related to molecular coverage.

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Hi, can anyone tell me how to estimate width of one stearic acid when it is in water.

/\/\/\/\/\/\/\/\-COOH <- i want the width going up and down.
 
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I'd guess it's not likely to be more than 3 or 4A wide. What kind of accuracy are you looking for ?
 
I'm working on a lab that uses the amount stearic acid that covers an area of water to determine the avogadro's number. So far I've only gotten that are 10^24 instead of 10^23...I think the key is the estimate of the width of the COOH that touches the water.
 

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