I do not understand why for mixtures freezing point is lower than melting point. Are not the two representing the same equilibrium between solid and liquid which we are approaching from two different sides, so why should the temperature at which this happens be different for the two cases?
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periodic trends - Comparing radii in lithium, beryllium, magnesium, aluminium and sodium ions
Apparently the of last four, $\ce{Mg^2+}$ is closest in radius to $\ce{Li+}$. Is this true, and if so, why would a whole larger shell ($\ce{...
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I came across the following in a newspaper article: 藤沢健太教授(宇宙物理学)らの研究グループ The first part (藤沢健太教授) is the name of a professor (Professor Kent...
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