RAN Chimie 28/11
Quiz
•
Chemistry
•
University
•
Practice Problem
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Hard
Germain Boissonnet
Used 4+ times
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6 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Calculer la concentration molaire en ions potassium (K+) d’une solution contenant 25 mg de chromate de potassium (K2CrO4) dans 50 cL d’eau.
On donne : MK = 39,1 g.mol-1 MCr = 52,0 g.mol-1 MO = 16,0 g.mol-1
2,06.10-3 mol.L-1
1,03.10-3 mol.L-1
5.15.10-4 mol.L-1
3,58.10-3 mol.L-1
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Le carbonate de calcium a pour formule :
Na2CO3
CaCO3
Ca2CO3
Ca(OH)2
NaHCO3
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
L'acide carbonique a pour formule :
Na2CO3
H2CO3
HCO3
HCl
H2SO4
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quel est le nom de la molécule suivante : KSH
Kesha
Sulfure de potassium
Acide sulfurique
Hydrogénosulfure de potassium
Korn shell
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Comme se nomme la molécule suivante : KCN
Cyanure de potassium
Carbonitrate de potassium
Nitrate de carbopotassium
Potassium carbonara
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Comment se nomme la molécule suivante: CH3-CH2-CH(CH3)-CH2-CH3
3-méthylpentane
hexane
3-méthylhexane
2-éthylbutane
Cherry Bomb !
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