
ST4 dissolution dilution
Authored by Henney Dion-Bernier
Science
10th - 11th Grade
Used 29+ times

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10 questions
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1.
MULTIPLE SELECT QUESTION
5 mins • 1 pt
Cochez les concentrations qui sont équivalentes à 3 g/L
3000 g/ml
0,003 g/ml
0,3 % m/v
30 % m/v
2.
FILL IN THE BLANK QUESTION
5 mins • 1 pt
Une solution salée contient 15 % (m/v) de sel. Quelle quantité de sel y a-t-il si la solution a un volume de 3 L? (Indiquez les unités dans votre réponse.)
3.
FILL IN THE BLANK QUESTION
5 mins • 1 pt
La recette d'un chocolat chaud indique qu'il faut utiliser 4,5 g de poudre au chocolat pour obtenir 350 ml de boisson. Quelle est la concentration en poudre au chocolat de la boisson en % (m/v)? (Indiquez les unités dans votre réponse.)
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
On met 14 g de NaOH dans l'eau pour un volume total de 250 ml. Quelle est la concentration g/L?
56 g/L
14 g/L
1 g/L
0,25 g/L
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Quelle serait la concentration en %(V/V) d'une solution de 250 ml qui contient 20 ml de soluté?
0,08 % (v/v)
8 % (v/v)
80 % (v/v)
0,8 % (v/v)
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Une solution concentrée à 40 g/L doit être diluée à 30 g/L. Quelle quantité de la solution initiale devons-nous utiliser si nous voulons obtenir 250 ml de la solution finale?
62,5 ml
333,33 ml
4,8 ml
187,5 ml
7.
FILL IN THE BLANK QUESTION
5 mins • 1 pt
Nous désirons obtenir 3 L de solution concentrée à 2,5 g/L. Quel volume d'une solution concentrée à 4,5 g/L devons-nous utiliser pour y parvenir?
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