Phase diagram of CO<sub>2</sub> (<a href="https://en.wikipedia.org/wiki/carbon_dioxide" class="extiw" title="w:carbon dioxide">carbon dioxide</a>).
X axis is temperature in <a href="https://en.wikipedia.org/wiki/kelvin" class="extiw" title="w:kelvin">kelvin</a>; Y axis is pressure in <a href="https://en.wikipedia.org/wiki/bar_(unit)" class="extiw" title="w:bar (unit)">bar</a>.
<a href="https://en.wikipedia.org/wiki/User:Foobaz" class="extiw" title="en:User:Foobaz">en:User:Foobaz</a>
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