I'd like to do a class experiment as a metaphor for human relationships. Two people each have a different chemical which evaporates quickly (at STP). There is one glass between them. If only one person pours his/her chemical into the glass, it quickly evaporates. However, if both pour equal portions of their respective chemicals into the glass, it is a stable mixture which can fill the glass and not evaporate.

Are there two such chemicals that will do this?

  • $\begingroup$ I cannot immediately come up with an example for evaporating chemicals, but how about epoxy resin? It is usually sold as a two liquid components which quickly solidify upon mixing. As solid as friendship in a fairy tale. $\endgroup$ – andselisk Nov 14 '19 at 17:30
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    $\begingroup$ Thanks. Epoxy resin won't work for this analogy; because the idea is that, if one person doesn't add anything, the glass becomes empty fairly quickly. I.E., the only way to fill the glass and keep it full is if both people are adding what they can. $\endgroup$ – Rick in Houston Nov 14 '19 at 18:33
  • $\begingroup$ Well, there's plenty of azeotropes which are somewhat less volatile then their constituents. $\endgroup$ – Mithoron Nov 14 '19 at 19:12
  • $\begingroup$ Silane and oxygen, although the transition to a low vapor-pressure state is, well, exciting... $\endgroup$ – Jon Custer Nov 14 '19 at 21:50
  • $\begingroup$ Both components need to be liquid at STP; therefore, the Silane/Oxygen combo doesn't work. $\endgroup$ – Rick in Houston Nov 15 '19 at 22:45

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