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Energy released for atom of carbon

sabato, Dicembre 26th, 2020

grafite,anidride carbonica,atomo di carbonio

Exercise of Nuclear reactor physics by ing. Giorgio Bertucelli.

The energy released when carbon (graphite) is burned to carbon dioxide is 32797J/g . What is the energy released for atom of carbon? (Graphite density is 2.25g/cm³).


Solution
From table of atomic raddi we read for C:


The volume of an atom of C:

The mass of C:


Then energy per atom is:


(altro…)



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Density of Na at the melting point

venerdì, Dicembre 25th, 2020

Atomic and Molecular Structure

Exercise of Nuclear reactor physics by ing. Giorgio Bertucelli.

The molecular radius of sodium is 1.9 Å (Angostrom). Estimate the density of Na11²³ at the melting point.


Solution
If the molecular is assumed to be spherical the volume VNa is given by

Indice delle lezioni/esercizi


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