La mole, quantité de matière (2)
Quiz
•
Chemistry
•
10th Grade
•
Practice Problem
•
Hard
Christine MORTAGNE
Used 54+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
La mole est l'unité de:
matière
quantité de matière
masse
quantité de masse
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Le symbole de la quantité de matière est:
M, exprimé en g/mol
m, exprimé en g
n, exprimé en mol
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
La masse molaire moléculaire de l'aspirine (formule brute : C9H8O4) est égale à :
M(H) = 1 g/mol
M(C) = 12 g/mol
M(O) = 16 g/mol
180 g/mol
160 g/mol
180 g
90 g/mol
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
100 g de sucre (saccharose) sont nécessaires pour faire un gâteau. Quelle est la quantité de matière contenue dans 100 g de sucre?
On donne la masse molaire du saccharose: M = 342 g/mol
3,42 mol
0,29 mol
0,29 g
5.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
La relation entre la masse et la quantité de matière est:
Cocher toutes les réponses possibles.
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
La masse molaire du savon M = 304 g/mol.
Combien y-a-t-il de moles de savon dans un savon de Marseille de 250 g ?
0,82 g/mol
1,2 mol
0,82 mol
7.
MULTIPLE SELECT QUESTION
3 mins • 1 pt
L'ion nitrate est un polluant de l'eau.
La masse molaire de l'ion nitrate NO3- est:
cocher toutes les réponses possibles
M(N) +3 x M(O)-1
M(N) + M(O)x3
62 g/mol
61 g/mol
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