December 2020 0 49 Report
Bonjour pouvez vous me aider svp merci beaucoup Complétez si besoin en respectant la conservation codes Atomes et des charges
... FE+....H+=....fe2++....H2
2Al+....H+=....Al3+ +3H2
....Zn+..…H+ =....H2 +....Zn2+
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