0.10 mL of oil can spread over a surface of 40 m^2 of water in a film one molecule thick to prevent the water from evaporating as fast. If one nanometer is 1 x 10^-9 meters, what is the length of one oil molecule in nanometers?(adsbygoogle = window.adsbygoogle || []).push({});

Ok so this is a really stupid question, but I got the correct number, but my decimal is in the wrong place, and ive done the problem over and over and over so theres something wrong in my calculations. The correct answer is 2.5 nanometers, but I always get 25 nanometers. Heres my thought process:

0.10 mL/ 100 cm * 0.10 mL/40 m^2/100 cm/1*10^-9 = 2.5*10^1

This is a really stupid question and I apologize

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# Homework Help: A very stupid question, calculation problem

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