Formes liquides : exercices
Quiz
•
Other
•
5th Grade
•
Practice Problem
•
Hard
vinciane scoyer
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22 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quelle est la concentration massique (g/ml) d'une solution contenant 10 g de NaCl dans 200 mL d'eau ?
0,02 g/mL
0,05 g/mL
0,08 g/mL
0,1 g/mL
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quelle est la concentration massique (g/L) d'une solution contenant 15 g de sulfate de magnésium dans 200 mL ?
150 g/L
30 g/L
60 g/L
75 g/L
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quelle est la concentration massique (g/ml) d'une solution contenant 25 g de sulfate de cuivre (CuSO₄) dans 500 mL d'eau ?
0,08 g/mL
0,05 g/mL
0,1 g/mL
0,02 g/mL
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quelle est la concentration en pourcentage (m/V) d'une solution contenant 15 g de KCl dans 300 mL ?
5 %
7 %
10 %
2 %
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Si une crème contient 4 g de substance active dans 100 g de crème, quelle est la concentration en pourcentage massique (% m/m) de la substance active ?
8 %
4 %
2 %
6 %
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quelle masse de glucose faut-il dissoudre pour préparer 1 L d'une solution à 5 % ?
50 g
25 g
100 g
75 g
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quelle est la concentration en pourcentage (m/m) d'une pommade contenant 12 g d'acide salicylique dans 150 g de pommade ?
15 %
5 %
10 %
8 %
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