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== Results ==

== Results ==

In the following table are listed only the value of the residue. For all of them an experimental error of 0.02 ml is applied with respect to the measurement (due to the systematic error of the balance, which has an accuracy of the centigram), but given the relative arbitrariness of the above definitions, consider a real accuracy of an order of magnitude less (i.e. 0.2 ml)  

In the following table are listed only the value of the residue. For all of them an experimental error of 0.02 ml is applied with respect to the measurement (due to the systematic error of the balance, which has an accuracy of the centigram), but given the relative randomness of the above definitions, consider a real accuracy of an order of magnitude less (i.e. 0.2 ml)

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