léon-le-bourdon Posted June 7, 2020 Posted June 7, 2020 1) Puis-je avoir la résolution de cet item ? merci Quote
Chat_du_Cheshire Posted June 7, 2020 Posted June 7, 2020 Hello, n CH => concentration de 10^-2n M Donc ici 30 CH soit 10^-2*30 = 10^-60 M Quote
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