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lachipstte99
@lachipstte99
February 2021
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Bonjour pouvez-vous m'aider à faire mon exercice de physique je n'y arrive vraiment pas:
On veut préparer 200 ml d'une solution de sodium (NaOH) de concentration: C=0,725 mol/L-1
masse molaire:
M(O)= 16 mol/L-1
M(H)= 1 mol/L-1
M(Na)= 23 mol/L-1
Je dois trouver la masse en grammes du dioxyde de sodium à incorporer.
Merci d'avance :)
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Bonjour, pouvez vous d'aider je ne comprend pas l'exercice 1 Merci d'avance ;)
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