. . . . "A descriptor of the density of a vapour in relation in that of hydrogen, defined as the mass of a certain volume of the given substance divided by the mass of the same volume of hydrogen." . . . "Vapour density" . "vapour density of substance" . . . . . "Christos Vasileiou" . "2026-01-26T09:47:20.151Z"^^ . . . . . . . . . . . "RSA" . "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAz1OobdRASd9SftHrLhG905OXjv8DHndvyWzXRJ5EDFPankMSnHZPHK+g2qEeRWdonstt55CLrpTpWsVv9xRtTqPidXHbnWLBXX42iCB+EnZNoKqAVKF5GxkSR38S0uTTq3aeQJbw2kTpx6LMkspmuH95fgAI/lfqPWrxdlI98jIeHQ14UXZpiWmkkvPgC9GVgmwHiG1hB/NCA2fKCOxVodN44OfhAPtkWmPJ40IcGPSalI4HRqgLLI5PabdRk3PiG81cUngmQU1Xk6EapzkRJGenkOlGsC5L4ktEPO6LS9uBMLTMLQDtGtkrcwqg5HmeKv7Ili3vgr3LL8/GaBBOLQIDAQAB" . "F05FZ9DFrUoKzGVN55qM7Ev39PSvfP6pGq3mBJzTdlJy1rM9M+5jczFhPYsk7xWjW+SxzPfCl1hU+mtt6/ljVDXGHzrTt4CsSk7bdwBbEFWn6uas08HMrNuLlQ0Ubh25IDv2KtlmS5NbpQmZtVyouBM1mKA1JExf57cE1e/ISvtQ3L6uc0ybnHhMYnU5z5iizQixQG38+tBb3pprlET2ughYPM2RXl7E/Zv+m2oM8Lmnh7AnMu4/DtsHFNDdDzQ7V8LlZQ57Ec2mSqEbORpjO5BGDsItgmigv6hbM4pH0HemdZu+sW44T+KBmHtx7D/HaeAetW5QR2nEZD0WVk1KLA==" . . .