Download - exercices pc
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www.Achamel.info cours pratiques en ligne
1
11
.
1nm = 1/109m109m
1mm
12
3-1
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www.Achamel.info cours pratiques en ligne
La formule chimique
2
corps pur simpleHe
O3O2N2Cl2H2
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www.Achamel.info cours pratiques en ligne
corps pur composéCO -
CH4CO2
He
KrNeXeAr