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0Marine
@0Marine
April 2019
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URGENT S'IL VOUS PLAÎT
J'ai un contrôle demain qui porte sur cet exercice (ci-joint) et je n'y arrive pas du tout
merci d'avance
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maudmarine
Verified answer
A)
Cm = 1500 x 0,025 x 10⁻⁶ g.ml
Cm
= 3,75 x 10⁻⁵ g.ml, soit
3,75 x 10⁻² g.l
b)
Rappel formule
:
m = Cm x V
Donc :
m = 3,75 x 10⁻² x 0,67 x 10⁻³
m = 2,51 x 10⁻⁵ g
2 votes
Thanks 1
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Bonsoir, besoin d'aide pour l'exercice ci-joint, merci d'avance
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Verified answer
A)Cm = 1500 x 0,025 x 10⁻⁶ g.ml
Cm = 3,75 x 10⁻⁵ g.ml, soit 3,75 x 10⁻² g.l
b)
Rappel formule :
m = Cm x V
Donc :
m = 3,75 x 10⁻² x 0,67 x 10⁻³
m = 2,51 x 10⁻⁵ g