Réaction chimique

Quiz
•
Chemistry
•
12th Grade
•
Hard
zineb dahmani
Used 17+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Quelle est la quantité de matière en mole (arrondie au centième) contenue dans 120 g d'essence C8H18.
Rappel: M(C)=12g/mol et M(H)=1g/mol
1,06 mol
0,95 mol
1,05 mol
1 mol
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Quel est le bon équilibrage de l'équation de combustion suivante?
...C17H36+...O2=> ...H2O+...CO2
C17H36+44,5O2=> 17H2O+36CO2
C17H36+52O2=> 18H2O+17CO2
C17H36+52O2=> 36H2O+34CO2
C17H36+26O2=> 18H2O+17CO2
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Le Manganèse Mn possède:
25 neutrons
55 protons
25 protons
55 neutrons
4.
FILL IN THE BLANK QUESTION
3 mins • 1 pt
Calculer la masse en grammes contenue dans 3 moles de Manganèse Mn?
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Quelle est la bonne répartition électronique de l'ion Magnésium Mg2+??
K(2)L(8)M(2)
K(2)L(6)M(4)
K(2)L(8)M(8)N(6)
K(2)L(8)
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Donner le volume en litres contenu dans 5 mol de gaz dioxygène O2.
On donne le volume molaire Vmol=22,4L/mol
0,22L
4,48L
112L
716,8L
7.
FILL IN THE BLANK QUESTION
3 mins • 1 pt
Quelle est la masse molaire de la molécule (voir la photo)
(Rappel: M(C)=12g/mol; M(H)=1g/mol; M(O)=16g/mol
Carbone:noir ; oxygène:rouge ; Hydrogène:Blanc)
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