The Becquerel Rays And the Properties of Radium
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To quickly assess the difficulty of the text, read a short excerpt:
Helium is one of the products of the series of changes connected with the existence of radium.
Now heHum is only one of a series of five gases, all having a graduated series of properties. These gases have several times been mentioned in the course of the present work. But it will be desirable here to give a somewhat more detailed account of them. The complete series is helium, neon, argon, krypton, xenon.
We have already devoted some consideration to the history of the discovery of argon, and ...of the discovery of helium which resulted from it. As soon as these gases had been obtained, the question arose of whether they were simple homogeneous substances, or mixtures of two or more constituents.
Suppose we possessed a liquid of unknown com- position. How should we ascertain whether it was homogeneous or complex ? Whether it consisted of one chemical substance or of several ? The method which generally succeeds is to distil it. Unless the various constituents happen to boil at exactly the same temperature (and this would be most unlikely) the liquid first collected from the distillation would be rich in the more volatile constituent, and by redistilling this product several times we could eventually obtain the volatile constituent in a freer state.
What to read after The Becquerel Rays And the Properties of Radium?
You can find similar books in the "Read Also" column, or choose other free books by Robert John Strutt Rayleigh to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Helium is one of the products of the series of changes connected with the existence of radium.
Now heHum is only one of a series of five gases, all having a graduated series of properties. These gases have several times been mentioned in the course of the present work. But it will be desirable here to give a somewhat more detailed account of them. The complete series is helium, neon, argon, krypton, xenon.
We have already devoted some consideration to the history of the discovery of argon, and ...of the discovery of helium which resulted from it. As soon as these gases had been obtained, the question arose of whether they were simple homogeneous substances, or mixtures of two or more constituents.
Suppose we possessed a liquid of unknown com- position. How should we ascertain whether it was homogeneous or complex ? Whether it consisted of one chemical substance or of several ? The method which generally succeeds is to distil it. Unless the various constituents happen to boil at exactly the same temperature (and this would be most unlikely) the liquid first collected from the distillation would be rich in the more volatile constituent, and by redistilling this product several times we could eventually obtain the volatile constituent in a freer state.
What to read after The Becquerel Rays And the Properties of Radium?
You can find similar books in the "Read Also" column, or choose other free books by Robert John Strutt Rayleigh to read onlineMoreLess
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