Caractériser une solution aqueuse
Quiz
•
Chemistry
•
11th Grade
•
Practice Problem
•
Hard
Said Said Moudhoiri
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18 questions
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1.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Les masses molaires atomiques sont indiquées:
Pour chaque élément
dans la classification périodique des éléments
en mol
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
16 g/mol
32 g/mol
18 g/mol
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Une solution aqueuse de chlorure de sodium a pour concentration 25 g/L, cela signifie que dans 1 L de solution, la quantité de chlorure de sodium est de :
25 g
2,5 g
25 L
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
L'indication 20 mol/L correspond à une :
Concentration en masse
Concentration molaire
masse molaire
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diluer une solution a pour effet de diminuer :
Son volume
Sa concentration
Sa masse
6.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Pour prélever précisément un volume, il faut :
Une éprouvette
Un dispositif d'aspiration
Une pipette
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Une eau salée réalisée à partir de 1 g de sel pour 20 mL de solution aqueuse a pour concentration :
50 g/L
1 g/L
0,05 g/L
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