GS 10 Chimie Semestre 1 Examen 1
Quiz
•
Chemistry
•
10th Grade
•
Hard
Château Château Eğitim
Used 1+ times
FREE Resource
16 questions
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1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Pour quels pairs des composés peut-on appliquer la loi de Dalton?
NO et N2O3
CH4 et C2H6
HNO3 et HNO2
H2O et CO2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
S et O forment deux composés différents. Le premier contient 50% de S et le deuxième contient 60% de l’O.
La formule du premier composé est SO2. Déterminer la formule du deuxième composé.
SO3
SO4
S2O3
S2O4
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
On a 0,2 mol de HNO3
Combien de mol d’atomes y a-t-il?
1
2
0,5
4
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
On a 0,2 mol de HNO3 (H=1 g/mol, N=14 g/mol, O=16 g/mol)
Quelle est la masse de 0,2 mol de HNO3?
12,6
24,8
32
40
5.
OPEN ENDED QUESTION
3 mins • 1 pt
En faisant réagir des masses identiques de chlore Cl2 et de sodium Na, on
obtient 0,4 mol de NaCl. Quelle est la masse de réactif en excès ? (Na:23
Cl:35)
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6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Selon la réaction suivante, 6,8 g de NH3 réagit avec CO2. Déterminer la masse des produits. (H:1,
C:12, N:14, O:16)
2NH3(g)+CO2(g). ____ (NH2)2CO(aq)+ H2O(l)
12
15
16
26
7.
OPEN ENDED QUESTION
3 mins • 1 pt
Dans le composé X2Y5 12 g de X sont combinés à 30 g de Y. quelle masse de l’élément Y se combinera à 18 g de X dans le composé X2Y3
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