I was wondering if I could assume a water density ~1.0 g/cm3 after it was absorbed by the skin, or other medium.

I am particularly thinking on a molecular level, if the nanostructure and size of molecules of the absorbing medium can play a role in keeping water molecules sufficiently isolated.

At what point should I stop considering that clumps of a few water molecules can no longer be considered a liquid?

At what point does it stop to make sense to talk about density of water, or at what point should I start doubting that it's density is no longer the same as in liquid state?

  • $\begingroup$ Your quoted density only applies to pure water in bulk. When you have a mixture or a very small number of water molecules, you haven't met these conditions. $\endgroup$ – David White Jul 5 at 15:47
  • $\begingroup$ Even in the opposite situation, where there's a small amount of other material absorbed by/dissolved in water, you can't say the density of the solution is the same. This is why you float more easily on the Dead Sea. $\endgroup$ – probably_someone Jul 5 at 15:55
  • $\begingroup$ @DavidWhite it's exactly that I would to like to understand better. Until what point is such approximation valid $\endgroup$ – cinico Jul 5 at 17:33
  • $\begingroup$ @probably_someone I am not talking about the density of the solution,only the water $\endgroup$ – cinico Jul 5 at 17:35
  • $\begingroup$ @cinico, you must necessarily talk about solution density when other things are dissolved in water or water is dissolved in other things. For real world applications, the point at which you have to consider such a solution will depend on some type of purity specification, so such a point varies depending on the application. $\endgroup$ – David White Jul 5 at 17:39

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