Geodesic
The chemical formula C_{n}h_{2n+2) and its mathematical background
The Teaching of Mathematics, XI (2008) no. 2, p. 53 .

Voir la notice de l'article provenant de la source eLibrary of Mathematical Institute of the Serbian Academy of Sciences and Arts

Already in the elementary school, on the chemistry classes, students are told that the general formula of alkanes is $C_nH_{2n+2}$. No proof of this claim is offered, either then or at any higher level. We now show how this formula can be proven in a mathematically satisfactory manner. To do this we have to establish a number of elementary properties of the mathematical objects called trees.
Classification : 05C05 05C90 K34
Keywords: Graph Theory, Trees, Chemistry, Alkanes. 
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     title = {The chemical formula {C_{n}h_{2n+2)} and its mathematical background},
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Ivan Gutman. The chemical formula C_{n}h_{2n+2) and its mathematical background. The Teaching of Mathematics, XI (2008) no. 2, p. 53 . http://geodesic.mathdoc.fr/item/TM2_2008_XI_2_a0/