
2de - Chimie
Authored by Rita Mikhael
Chemistry
10th Grade
Used 3+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quel est le symbole de la quantité de matière?
m
M
N
n
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La notation totale du nombre d'entités est ...
M
n
N
m
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
L'unité dans laquelle s'exprime la constante d'Avogadro est ...
mol/L
mol
mol-1
g.mol-1
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Une mole d'entité contient ...
6,02 × 1023
6,02 × 1021
6,01 × 1023
1,67 × 10-27
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Une pomme de terre contient 16 g d'amidon.
La masse d'une molécule d'amidon est
1,66.10-20 kg .
Calculer le nombre de molécules d'amidon dans cette pomme de terre
1,03×10-18
9,64×1020
8,64×1015
9,64×1017
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Le nombre d'atomes de fer dans un clou en fer pur de masse 11,4 .10-3 kg est 1,23 .1023.
Quelle est la masse d'un atome de fer ?
9,26×10-23 kg
10×1020 kg
9,26×10-26 kg
1,40×1021 kg
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Choisir la bonne réponse
Deux moles de cuivre ont une masse de 127g
Une mole d'aluminium a une masse de 63,5g
Une mole d'aluminium a une masse supérieure à 63,5g
une mole de cuivre a une masse de 63,5g
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