
Evaluation fin d'année
Quiz
•
Chemistry
•
2nd Grade
•
Practice Problem
•
Hard
Landolsi Med
Used 2+ times
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23 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Une dilution est une addition d'un liquide à une solution pour en ......sa concentration.
augmenter
diminuer
multiplier
diviser
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La concentration correspond à :
la masse de soluté.
la masse volumique.
la masse de soluté contenue dans un volume.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2. Quelle est l'unité de la concentration massique?
g/L.
Kg/L
ml/g
L/g
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Repérer la (ou les) formule(s) correcte(s).
C= m/v
c=v*m
c*v=m
m=c/v
5.
MULTIPLE SELECT QUESTION
45 sec • 2 pts
Pour préparer 250 mL de solution, on introduit 4,0 g de soluté. La concentration en soluté de cette solution est de :
30 g/L.
16 g/L.
10 g/L.
100 g/L.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
En mettant 1 g de sel dans 200 mL d'eau, la concentration en sel est de :
5 × 10-3 g/mL.
200 mL/g
50 g/L
6 g/mL
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Quelle est la valeur internationale de volume?
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