
Révision STE
Authored by Nancy Berger
Science
11th Grade
Used 13+ times

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30 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
119,28 g/mol
167,90 g/mol
262,87 g/mol
231,90 g/mol
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
450 molécules
2,32 molécules
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
L’acide benzoïque (C6H5COOH) est un conservateur alimentaire fortement présent dans les canneberges. Lors de la digestion, cet acide est brûlé. Soit la combustion de l’acide benzoïque.
Équation squelette : C6H5COOH(aq) + O2(g) → CO2(g) + H2O(g)
On veut savoir la masse d’eau produite à la suite de la combustion de 50,00 g d’acide benzoïque.
22,13 g
150,00 g
16,67 g
7,38 g
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quelle formule moléculaire représente le trichlorure de phosphore?
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Vrai ou faux? Les isotopes ont le même nombre de masse?
Vrai
Faux
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Vrai ou faux? Chez les isotopes d'un élément, le nombre de protons varie.
Vrai
Faux
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