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Chimie organique


Wonder

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Bonjour, j'aurais besoin. de petites confirmations

 

https://zupimages.net/viewer.php?id=20/02/sm1l.png : j'aurais dit B vraie et c FAUSSE ?

https://zupimages.net/viewer.php?id=20/02/sgek.png : C faux non a cause du doublet ? 

https://zupimages.net/viewer.php?id=20/02/at0j.png : pour la B comment fait on pour savoir ? et pour la E j'aurais dit SS non ?

https://zupimages.net/viewer.php?id=20/02/zehq.png : CE fausses ?

 

merci par avance 

Edited by Léabricot
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